Annotation of html5/spec/the-style-element.html, revision 1.116
1.88 mike 1: <!DOCTYPE html>
1.96 mike 2: <html lang="en-US-x-Hixie"><head><title>4.2.6 The style element — HTML5</title><link rel="stylesheet" href="alert.css"><style type="text/css">
1.1 mike 3: pre { margin-left: 2em; white-space: pre-wrap; }
4: h2 { margin: 3em 0 1em 0; }
5: h3 { margin: 2.5em 0 1em 0; }
6: h4 { margin: 2.5em 0 0.75em 0; }
7: h5, h6 { margin: 2.5em 0 1em; }
8: h1 + h2, h1 + h2 + h2 { margin: 0.75em 0 0.75em; }
9: h2 + h3, h3 + h4, h4 + h5, h5 + h6 { margin-top: 0.5em; }
10: p { margin: 1em 0; }
11: hr:not(.top) { display: block; background: none; border: none; padding: 0; margin: 2em 0; height: auto; }
12: dl, dd { margin-top: 0; margin-bottom: 0; }
13: dt { margin-top: 0.75em; margin-bottom: 0.25em; clear: left; }
14: dt + dt { margin-top: 0; }
15: dd dt { margin-top: 0.25em; margin-bottom: 0; }
16: dd p { margin-top: 0; }
17: dd dl + p { margin-top: 1em; }
18: dd table + p { margin-top: 1em; }
19: p + * > li, dd li { margin: 1em 0; }
20: dt, dfn { font-weight: bold; font-style: normal; }
21: i, em { font-style: italic; }
22: dt dfn { font-style: italic; }
23: pre, code { font-size: inherit; font-family: monospace; font-variant: normal; }
24: pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
25: pre em { font-weight: bolder; font-style: normal; }
26: @media screen { code { color: orangered; } code :link, code :visited { color: inherit; } }
27: var sub { vertical-align: bottom; font-size: smaller; position: relative; top: 0.1em; }
28: table { border-collapse: collapse; border-style: hidden hidden none hidden; }
29: table thead, table tbody { border-bottom: solid; }
30: table tbody th:first-child { border-left: solid; }
31: table tbody th { text-align: left; }
32: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
33: blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
34:
35: .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
36: .matrix, .matrix td { border: none; text-align: right; }
37: .matrix { margin-left: 2em; }
38: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
39: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
40: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
41:
42: .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
43: img.extra, p.overview { float: right; }
44: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; position: relative; }
45: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
46: pre.idl::before { content: "IDL"; font: bold small sans-serif; padding: 0.5em; background: white; position: absolute; top: 0; margin: -1px 0 0 -4em; width: 1.5em; border: thin solid; border-radius: 0 0 0 0.5em }
47: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
48: pre.css:first-line { color: #AAAA50; }
49: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
50: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
51: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
52: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
53: dl.domintro dd p { margin: 0.5em 0; }
54: dl.domintro:before { display: table; margin: -1em -0.5em -0.5em auto; width: auto; content: 'This box is non-normative. Implementation requirements are given below this box.'; color: black; font-style: italic; border: solid 2px; background: white; padding: 0 0.25em; }
55: dl.switch { padding-left: 2em; }
56: dl.switch > dt { text-indent: -1.5em; }
57: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
58: dl.triple { padding: 0 0 0 1em; }
59: dl.triple dt, dl.triple dd { margin: 0; display: inline }
60: dl.triple dt:after { content: ':'; }
61: dl.triple dd:after { content: '\A'; white-space: pre; }
62: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
63: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
64: a .diff-new { border-bottom: 1px blue solid; }
65:
66: h2 { page-break-before: always; }
67: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
68: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
69:
70: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
71: li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]), { border-bottom: solid #9999CC; }
72:
73: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
74: div.head p { margin: 0; }
75: div.head h1 { margin: 0; }
76: div.head .logo { float: right; margin: 0 1em; }
77: div.head .logo img { border: none } /* remove border from top image */
78: div.head dl { margin: 1em 0; }
79: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
80:
81: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
82: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
83: body > .toc > li > * { margin-bottom: 0.5em; }
84: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
85: .toc, .toc li { list-style: none; }
86:
87: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
88: .brief li { margin: 0; padding: 0; }
89: .brief li p { margin: 0; padding: 0; }
90:
91: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
92: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
93: .category-list li { display: inline; }
94: .category-list li:not(:last-child)::after { content: ', '; }
95: .category-list li > span, .category-list li > a { text-transform: lowercase; }
96: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
97:
98: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
99: .XXX > :first-child { margin-top: 0; }
100: p .XXX { line-height: 3em; }
101: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
102: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
103: .annotation :link, .annotation :visited { color: inherit; }
104: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
105: .annotation span { border: none ! important; }
106: .note { color: green; background: transparent; font-family: sans-serif; }
107: .warning { color: red; background: transparent; }
108: .note, .warning { font-weight: bolder; font-style: italic; }
109: .note em, .warning em, .note i, .warning i { font-style: normal; }
110: p.note, div.note { padding: 0.5em 2em; }
111: span.note { padding: 0 2em; }
112: .note p:first-child, .warning p:first-child { margin-top: 0; }
113: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
114: .warning:before { font-style: normal; }
115: p.note:before { content: 'Note: '; }
116: p.warning:before { content: '\26A0 Warning! '; }
117:
118: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
119: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
120: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
121: .bookkeeping dt { margin: 0.5em 2em 0; }
122: .bookkeeping dd { margin: 0 3em 0.5em; }
123:
124: h4 { position: relative; z-index: 3; }
125: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
126: .element {
127: background: #EEEEFF;
128: color: black;
129: margin: 0 0 1em 0.15em;
130: padding: 0 1em 0.25em 0.75em;
131: border-left: solid #9999FF 0.25em;
132: position: relative;
133: z-index: 1;
134: }
135: .element:before {
136: position: absolute;
137: z-index: 2;
138: top: 0;
139: left: -1.15em;
140: height: 2em;
141: width: 0.9em;
142: background: #EEEEFF;
143: content: ' ';
144: border-style: none none solid solid;
145: border-color: #9999FF;
146: border-width: 0.25em;
147: }
148:
149: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
150: td > .example:only-child { margin: 0 0 0 0.1em; }
151:
152: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
153: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
154: ul.domTree li li { list-style: none; }
155: ul.domTree li:first-child::before { position: absolute; top: 0; height: 0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
156: ul.domTree li:not(:last-child)::after { position: absolute; top: 0; bottom: -0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
157: ul.domTree span { font-style: italic; font-family: serif; }
158: ul.domTree .t1 code { color: purple; font-weight: bold; }
159: ul.domTree .t2 { font-style: normal; font-family: monospace; }
160: ul.domTree .t2 .name { color: black; font-weight: bold; }
161: ul.domTree .t2 .value { color: blue; font-weight: normal; }
162: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
163: ul.domTree .t7 code, .domTree .t8 code { color: green; }
164: ul.domTree .t10 code { color: teal; }
165:
166: body.dfnEnabled dfn { cursor: pointer; }
167: .dfnPanel {
168: display: inline;
169: position: absolute;
170: z-index: 10;
171: height: auto;
172: width: auto;
173: padding: 0.5em 0.75em;
174: font: small sans-serif, Droid Sans Fallback;
175: background: #DDDDDD;
176: color: black;
177: border: outset 0.2em;
178: }
179: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
180: .dfnPanel :link, .dfnPanel :visited { color: black; }
181: .dfnPanel p { font-weight: bolder; }
182: .dfnPanel * + p { margin-top: 0.25em; }
183: .dfnPanel li { list-style-position: inside; }
184:
185: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
186: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
187: #configUI p label { display: block; }
188: #configUI #updateUI, #configUI .loginUI { text-align: center; }
189: #configUI input[type=button] { display: block; margin: auto; }
190:
191: fieldset { margin: 1em; padding: 0.5em 1em; }
192: fieldset > legend + * { margin-top: 0; }
193: fieldset > :last-child { margin-bottom: 0; }
194: fieldset p { margin: 0.5em 0; }
195:
1.114 mike 196: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><meta content="noindex" name="robots"><style type="text/css">
1.1 mike 197:
198: .applies thead th > * { display: block; }
199: .applies thead code { display: block; }
200: .applies tbody th { whitespace: nowrap; }
201: .applies td { text-align: center; }
202: .applies .yes { background: yellow; }
203:
204: .matrix, .matrix td { border: hidden; text-align: right; }
205: .matrix { margin-left: 2em; }
206:
207: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
208: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
209: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
210:
211: td.eg { border-width: thin; text-align: center; }
212:
213: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
214: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
215: #table-example-1 caption { padding-bottom: 0.5em; }
216: #table-example-1 thead, #table-example-1 tbody { border: none; }
217: #table-example-1 th, #table-example-1 td { border: solid thin; }
218: #table-example-1 th { font-weight: normal; }
219: #table-example-1 td { border-style: none solid; vertical-align: top; }
220: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
221: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
222: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
223: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
224: #table-example-1 tbody td:first-child::after { content: leader(". "); }
225: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
226: #table-example-1 tbody td:first-child + td { width: 10em; }
227: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
228: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
229:
230: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
231: .apple-table-examples * { font-family: "Times", serif; }
232: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
233: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
234: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
235: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
236: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
237: .apple-table-examples td { text-align: right; vertical-align: top; }
238: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
239: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
240: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
241: .apple-table-examples sup { line-height: 0; }
242:
243: .details-example img { vertical-align: top; }
244:
245: #base64-table {
246: white-space: nowrap;
247: font-size: 0.6em;
248: column-width: 6em;
249: column-count: 5;
250: column-gap: 1em;
251: -moz-column-width: 6em;
252: -moz-column-count: 5;
253: -moz-column-gap: 1em;
254: -webkit-column-width: 6em;
255: -webkit-column-count: 5;
256: -webkit-column-gap: 1em;
257: }
258: #base64-table thead { display: none; }
259: #base64-table * { border: none; }
260: #base64-table tbody td:first-child:after { content: ':'; }
261: #base64-table tbody td:last-child { text-align: right; }
262:
263: #named-character-references-table {
264: white-space: nowrap;
265: font-size: 0.6em;
266: column-width: 30em;
267: column-gap: 1em;
268: -moz-column-width: 30em;
269: -moz-column-gap: 1em;
270: -webkit-column-width: 30em;
271: -webkit-column-gap: 1em;
272: }
273: #named-character-references-table > table > tbody > tr > td:first-child + td,
274: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
275: #named-character-references-table > table > tbody > tr > td:last-child:hover > span { position: absolute; top: auto; left: auto; margin-left: 0.5em; line-height: 1.2; font-size: 5em; border: outset; padding: 0.25em 0.5em; background: white; width: 1.25em; height: auto; text-align: center; }
276: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
277:
278: .glyph.control { color: red; }
279:
280: @font-face {
281: font-family: 'Essays1743';
282: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
283: }
284: @font-face {
285: font-family: 'Essays1743';
286: font-weight: bold;
287: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf');
288: }
289: @font-face {
290: font-family: 'Essays1743';
291: font-style: italic;
292: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf');
293: }
294: @font-face {
295: font-family: 'Essays1743';
296: font-style: italic;
297: font-weight: bold;
298: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
299: }
300:
301: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D%0Ahtml%20%7B%20border:%20solid%20yellow;%20%7D%20.domintro:before%20%7B%20display:%20none;%20%7D" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D%20.domintro:before%20%7B%20background:%20%23FFEEEE;%20%7D" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><script type="text/javascript">
302: function getCookie(name) {
303: var params = location.search.substr(1).split("&");
304: for (var index = 0; index < params.length; index++) {
305: if (params[index] == name)
306: return "1";
307: var data = params[index].split("=");
308: if (data[0] == name)
309: return unescape(data[1]);
310: }
311: var cookies = document.cookie.split("; ");
312: for (var index = 0; index < cookies.length; index++) {
313: var data = cookies[index].split("=");
314: if (data[0] == name)
315: return unescape(data[1]);
316: }
317: return null;
318: }
1.96 mike 319: </script>
1.1 mike 320: <script src="link-fixup.js"></script>
321: <link href="the-meta-element.html" title="4.2.5 The meta element" rel="prev">
322: <link href="index.html#contents" title="Table of contents" rel="contents">
323: <link href="styling.html" title="4.2.7 Styling" rel="next">
1.22 mike 324: </head><body onload="fixBrokenLink();" class="split chapter"><div class="head" id="head">
1.1 mike 325: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
326:
327: <h1>HTML5</h1>
1.116 ! mike 328: <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.5636.</p>
1.1 mike 329:
1.115 mike 330: <h2 class="no-num no-toc" id="editor-s-draft-25-april-2012">Editor's Draft 25 April 2012</h2>
1.85 mike 331: </div>
332:
333: <nav class="prev_next">
1.1 mike 334: <a href="the-meta-element.html">← 4.2.5 The meta element</a> –
335: <a href="index.html#contents">Table of contents</a> –
336: <a href="styling.html">4.2.7 Styling →</a>
337: </nav>
338:
1.85 mike 339: <h4 id="the-style-element"><span class="secno">4.2.6 </span>The <dfn><code>style</code></dfn> element</h4>
340:
341: <dl class="element"><dt><a href="element-definitions.html#element-dfn-categories" title="element-dfn-categories">Categories</a>:</dt>
1.1 mike 342: <dd><a href="content-models.html#metadata-content">Metadata content</a>.</dd>
343: <dd>If the <code title="attr-style-scoped"><a href="#attr-style-scoped">scoped</a></code> attribute is present: <a href="content-models.html#flow-content">flow content</a>.</dd>
1.25 mike 344: <dt><a href="element-definitions.html#element-dfn-contexts" title="element-dfn-contexts">Contexts in which this element can be used</a>:</dt>
1.1 mike 345: <dd>If the <code title="attr-style-scoped"><a href="#attr-style-scoped">scoped</a></code> attribute is absent: where <a href="content-models.html#metadata-content">metadata content</a> is expected.</dd>
346: <dd>If the <code title="attr-style-scoped"><a href="#attr-style-scoped">scoped</a></code> attribute is absent: in a <code><a href="the-noscript-element.html#the-noscript-element">noscript</a></code> element that is a child of a <code><a href="the-head-element.html#the-head-element">head</a></code> element.</dd>
347: <dd>If the <code title="attr-style-scoped"><a href="#attr-style-scoped">scoped</a></code> attribute is present: where <a href="content-models.html#flow-content">flow content</a> is expected, but before any other <a href="content-models.html#flow-content">flow content</a> other than <a href="content-models.html#inter-element-whitespace">inter-element whitespace</a>, and not as the child of an element whose content model is <a href="content-models.html#transparent">transparent</a>.</dd>
1.25 mike 348: <dt><a href="element-definitions.html#element-dfn-content-model" title="element-dfn-content-model">Content model</a>:</dt>
1.1 mike 349: <dd>Depends on the value of the <code title="attr-style-type"><a href="#attr-style-type">type</a></code> attribute, but must match requirements described in prose below.</dd>
1.25 mike 350: <dt><a href="element-definitions.html#element-dfn-attributes" title="element-dfn-attributes">Content attributes</a>:</dt>
1.1 mike 351: <dd><a href="global-attributes.html#global-attributes">Global attributes</a></dd>
352: <dd><code title="attr-style-media"><a href="#attr-style-media">media</a></code></dd>
353: <dd><code title="attr-style-type"><a href="#attr-style-type">type</a></code></dd>
354: <dd><code title="attr-style-scoped"><a href="#attr-style-scoped">scoped</a></code></dd>
355: <dd>Also, the <code title="attr-style-title"><a href="#attr-style-title">title</a></code> attribute has special semantics on this element.</dd>
1.25 mike 356: <dt><a href="element-definitions.html#element-dfn-dom" title="element-dfn-dom">DOM interface</a>:</dt>
1.1 mike 357: <dd>
358: <pre class="idl">interface <dfn id="htmlstyleelement">HTMLStyleElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
359: attribute boolean <a href="#dom-style-disabled" title="dom-style-disabled">disabled</a>;
360: attribute DOMString <a href="#dom-style-media" title="dom-style-media">media</a>;
361: attribute DOMString <a href="#dom-style-type" title="dom-style-type">type</a>;
362: attribute boolean <a href="#dom-style-scoped" title="dom-style-scoped">scoped</a>;
363: };
364: <a href="#htmlstyleelement">HTMLStyleElement</a> implements <a href="infrastructure.html#linkstyle">LinkStyle</a>;</pre>
365: </dd>
366: </dl><p>The <code><a href="#the-style-element">style</a></code> element allows authors to embed style
367: information in their documents. The <code><a href="#the-style-element">style</a></code> element is
368: one of several inputs to the <a href="styling.html#styling">styling processing
1.85 mike 369: model</a>. The element does not <a href="rendering.html#represents" title="represents">represent</a> content for the user.</p>
370:
371: <p>The <dfn id="attr-style-type" title="attr-style-type"><code>type</code></dfn>
1.1 mike 372: attribute gives the styling language. If the attribute is present,
373: its value must be a <a href="infrastructure.html#valid-mime-type">valid MIME type</a> that designates a
374: styling language. The <code title="">charset</code> parameter must
375: not be specified. The default value for the <code title="attr-style-type"><a href="#attr-style-type">type</a></code> attribute, which is used if the
1.85 mike 376: attribute is absent, is "<code title="">text/css</code>". <a href="references.html#refsRFC2318">[RFC2318]</a></p>
377:
378: <div class="impl">
1.1 mike 379:
380:
381: <p>When examining types to determine if they support the language,
382: user agents must not ignore unknown MIME parameters — types
383: with unknown parameters must be assumed to be unsupported. The <code title="">charset</code> parameter must be treated as an unknown
384: parameter for the purpose of comparing <a href="infrastructure.html#mime-type" title="MIME type">MIME
385: types</a> here.</p>
386:
1.85 mike 387: </div>
388:
389: <p>The <dfn id="attr-style-media" title="attr-style-media"><code>media</code></dfn>
1.1 mike 390: attribute says which media the styles apply to. The value must be a
391: <a href="common-microsyntaxes.html#valid-media-query">valid media query</a>. <span class="impl">The user agent
392: must apply the styles when the <code title="attr-style-media"><a href="#attr-style-media">media</a></code> attribute's value
393: <a href="common-microsyntaxes.html#matches-the-environment">matches the environment</a> and the other relevant
1.85 mike 394: conditions apply, and must not apply them otherwise.</span></p>
395:
396: <div class="impl">
1.1 mike 397:
398: <p class="note">The styles might be further limited in scope,
399: e.g. in CSS with the use of <code title="">@media</code>
400: blocks. This specification does not override such further
401: restrictions or requirements.</p>
1.4 mike 402:
1.85 mike 403: </div>
404:
405: <p id="style-default-media">The default, if the <code title="attr-style-media"><a href="#attr-style-media">media</a></code> attribute is omitted, is
1.1 mike 406: "<code title="">all</code>", meaning that by default styles apply to
1.85 mike 407: all media.</p>
408:
409: <p>The <dfn id="attr-style-scoped" title="attr-style-scoped"><code>scoped</code></dfn>
1.1 mike 410: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. If present, it
411: indicates that the styles are intended just for the subtree rooted
412: at the <code><a href="#the-style-element">style</a></code> element's parent element, as opposed to
1.85 mike 413: the whole <code><a href="dom.html#document">Document</a></code>.</p>
414:
415: <p>If the <code title="attr-style-scoped"><a href="#attr-style-scoped">scoped</a></code> attribute is
1.1 mike 416: present and the element has a parent element, then the
417: <code><a href="#the-style-element">style</a></code> element must be the first node of <a href="content-models.html#flow-content">flow
418: content</a> in its parent element other than <a href="content-models.html#inter-element-whitespace">inter-element
419: whitespace</a>, and the parent element's content model must not
1.85 mike 420: have a <a href="content-models.html#transparent">transparent</a> component.</p>
421:
422: <p class="note">This implies that only one scoped <code><a href="#the-style-element">style</a></code>
1.1 mike 423: element is allowed at a time, and that such elements cannot be
424: children of, e.g., <code><a href="the-a-element.html#the-a-element">a</a></code> or <code><a href="the-ins-element.html#the-ins-element">ins</a></code> elements, even
1.85 mike 425: when those are used as <a href="content-models.html#flow-content">flow content</a> containers.</p>
426:
427: <div class="impl">
1.1 mike 428:
429: <p>If the <code title="attr-style-scoped"><a href="#attr-style-scoped">scoped</a></code> attribute is
430: present, then the user agent must apply the specified style
431: information only to the <code><a href="#the-style-element">style</a></code> element's parent element
432: (if any), and that element's descendants. Otherwise, the specified
433: styles must, if applied, be applied to the entire document.</p>
434:
1.43 mike 435: <p class="critical">The following will eventually be moved to a CSS
436: specification; it is specified here only on an interim basis until
437: an editor can be found to own this.</p>
438:
439: <p>Within scoped CSS resources, authors may use an <code title="">@global</code> @-rule. The syntax of this rule is defined
440: as follows.</p>
441:
442: <p>The following production is added to the grammar:</p>
443:
444: <pre>global
445: : GLOBAL_SYM S* ruleset
446: ;</pre>
447:
448: <p>The following rules are added to the Flex tokenizer:</p>
449:
450: <pre>B b|\\0{0,4}(42|62)(\r\n|[ \t\r\n\f])?
451: @{G}{L}{O}{B}{A}{L} {return GLOBAL_SYM;}</pre>
452:
453: <p>Simple selectors in rule sets prefixed by the <code title="">@global</code> @-rule in scoped CSS resources must be
454: processed in the same way as normal rule sets in non-scoped CSS
455: resources.</p>
456:
457: <p>Simple selectors in scoped CSS resources that are not prefixed by
458: an <code title="">@global</code> @-rule must only match the
459: <code><a href="#the-style-element">style</a></code> element's parent element (if any), and that
460: element's descendants.</p>
461:
462: <p>For scoped CSS resources, the effect of other @-rules must be
463: scoped to the scoped sheet and its subresources, even if the @-rule
464: in question would ordinarily apply to all style sheets that affect
465: the <code><a href="dom.html#document">Document</a></code>. Any '@page' rules in scoped CSS resources
1.1 mike 466: must be ignored.</p>
467:
468: <p class="example">For example, an '@font-face' rule defined in a
469: scoped style sheet would only define the font for the purposes of
470: font rules in the scoped section; style sheets outside the scoped
471: section using the same font name would not end up using that
472: embedded font.</p>
473:
1.85 mike 474: <hr></div>
475:
476: <p id="title-on-style">The <dfn id="attr-style-title" title="attr-style-title"><code>title</code></dfn> attribute on
1.1 mike 477: <code><a href="#the-style-element">style</a></code> elements defines <a href="infrastructure.html#alternative-style-sheet-sets">alternative style sheet
478: sets</a>. If the <code><a href="#the-style-element">style</a></code> element has no <code title="attr-style-title"><a href="#attr-style-title">title</a></code> attribute, then it has no
479: title; the <code title="attr-title"><a href="global-attributes.html#the-title-attribute">title</a></code> attribute of
1.85 mike 480: ancestors does not apply to the <code><a href="#the-style-element">style</a></code> element. <a href="references.html#refsCSSOM">[CSSOM]</a></p>
481:
482: <p class="note">The <code title="attr-style-title"><a href="#attr-style-title">title</a></code>
1.1 mike 483: attribute on <code><a href="#the-style-element">style</a></code> elements, like the <code title="attr-link-title"><a href="the-link-element.html#attr-link-title">title</a></code> attribute on <code><a href="the-link-element.html#the-link-element">link</a></code>
484: elements, differs from the global <code title="attr-title"><a href="global-attributes.html#the-title-attribute">title</a></code> attribute in that a
485: <code><a href="#the-style-element">style</a></code> block without a title does not inherit the title
1.85 mike 486: of the parent element: it merely has no title.</p>
487:
488: <p>The <code><a href="infrastructure.html#textcontent">textContent</a></code> of a <code><a href="#the-style-element">style</a></code> element must
1.1 mike 489: match the <code title="">style</code> production in the following
1.85 mike 490: ABNF, the character set for which is Unicode. <a href="references.html#refsABNF">[ABNF]</a></p>
491:
492: <pre>style = no-c-start *( c-start no-c-end c-end no-c-start )
1.1 mike 493: no-c-start = <any string that doesn't contain a substring that matches c-start >
494: c-start = "<!--"
495: no-c-end = <any string that doesn't contain a substring that matches c-end >
1.85 mike 496: c-end = "-->"</pre>
497:
498:
499:
500: <div class="impl">
1.1 mike 501:
502: <p>All descendant elements must be processed, according to their
503: semantics, before the <code><a href="#the-style-element">style</a></code> element itself is
504: evaluated. For styling languages that consist of pure text (as
505: opposed to XML), user agents must evaluate <code><a href="#the-style-element">style</a></code>
506: elements by passing the concatenation of the contents of all the
1.46 mike 507: <code><a href="infrastructure.html#text">Text</a></code> nodes that are children of the
1.1 mike 508: <code><a href="#the-style-element">style</a></code> element (not any other nodes such as comments or
509: elements), in <a href="infrastructure.html#tree-order">tree order</a>, to the style system. For
510: XML-based styling languages, user agents must pass all the child
511: nodes of the <code><a href="#the-style-element">style</a></code> element to the style system.</p>
512:
513: <p>All <a href="urls.html#url" title="URL">URLs</a> found by the styling language's
514: processor must be <a href="urls.html#resolve-a-url" title="resolve a url">resolved</a>,
515: relative to the element (or as defined by the styling language),
516: when the processor is invoked.</p>
517:
518:
519: <p>Once the attempts to obtain the style sheet's <a href="infrastructure.html#critical-subresources">critical
520: subresources</a>, if any, are complete, or, if the style sheet
521: has no <a href="infrastructure.html#critical-subresources">critical subresources</a>, once the style sheet has
522: been parsed and processed, the user agent must, if the loads were
523: successful or there were none, <a href="webappapis.html#queue-a-task">queue a task</a> to
524: <a href="webappapis.html#fire-a-simple-event">fire a simple event</a> named <code title="event-load">load</code> at the <code><a href="#the-style-element">style</a></code> element,
525: or, if one of the style sheet's <a href="infrastructure.html#critical-subresources">critical subresources</a>
526: failed to completely load for any reason (e.g. DNS error, HTTP 404
527: response, a connection being prematurely closed, unsupported
528: Content-Type), <a href="webappapis.html#queue-a-task">queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple
529: event</a> named <code title="event-error">error</code> at the
530: <code><a href="#the-style-element">style</a></code> element. Non-network errors in processing the
531: style sheet or its subresources (e.g. CSS parse errors, PNG decoding
532: errors) are not failures for the purposes of this paragraph.</p>
533:
534: <p>The <a href="webappapis.html#task-source">task source</a> for these <a href="webappapis.html#concept-task" title="concept-task">tasks</a> is the <a href="webappapis.html#dom-manipulation-task-source">DOM manipulation task
535: source</a>.</p>
536:
537: <p>The element must <a href="the-end.html#delay-the-load-event">delay the load event</a> of the
538: element's document until all the attempts to obtain the style
539: sheet's <a href="infrastructure.html#critical-subresources">critical subresources</a>, if any, are
540: complete.</p>
541:
1.85 mike 542: </div>
543:
544: <p class="note">This specification does not specify a style system,
545: but CSS is expected to be supported by most Web browsers. <a href="references.html#refsCSS">[CSS]</a></p>
546:
547: <div class="impl">
1.1 mike 548:
549: <p>The <dfn id="dom-style-media" title="dom-style-media"><code>media</code></dfn>, <dfn id="dom-style-type" title="dom-style-type"><code>type</code></dfn> and <dfn id="dom-style-scoped" title="dom-style-scoped"><code>scoped</code></dfn> IDL attributes
550: must <a href="common-dom-interfaces.html#reflect">reflect</a> the respective content attributes of the
551: same name.</p>
552:
1.85 mike 553: </div>
554:
555: <p>The <dfn id="dom-style-disabled" title="dom-style-disabled"><code>disabled</code></dfn>
1.1 mike 556: IDL attribute behaves as defined <a href="styling.html#dom-linkstyle-disabled" title="dom-linkstyle-disabled">for the alternative style sheets
1.85 mike 557: DOM</a>.</p>
558:
559: <p>The <code><a href="infrastructure.html#linkstyle">LinkStyle</a></code> interface is also implemented by
1.1 mike 560: this element; the <a href="styling.html#styling">styling processing model</a> defines
1.85 mike 561: how. <a href="references.html#refsCSSOM">[CSSOM]</a></p>
562:
563: <div class="example">
1.1 mike 564:
565: <p>The following document has its emphasis styled as bright red
566: text rather than italics text, while leaving titles of works and
567: Latin words in their default italics. It shows how using
568: appropriate elements enables easier restyling of documents.</p>
569:
570: <pre><!DOCTYPE html>
571: <html lang="en-US">
572: <head>
573: <title>My favorite book</title>
574: <style>
575: body { color: black; background: white; }
576: em { font-style: normal; color: red; }
577: </style>
578: </head>
579: <body>
580: <p>My <em>favorite</em> book of all time has <em>got</em> to be
581: <cite>A Cat's Life</cite>. It is a book by P. Rahmel that talks
582: about the <i lang="la">Felis Catus</i> in modern human society.</p>
583: </body>
584: </html></pre>
585:
1.85 mike 586: </div>
587:
588:
589:
590:
591: </body></html>
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