63 lines
2.8 KiB
HTML
63 lines
2.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html LANG="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<title>CSS Line Height Inheritance</title>
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<style type="text/css">
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<!--
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h1 {margin-top: 0; margin-bottom: 0;}
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h2 {font-size: 125%; margin-top: 0;}
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h3 {font-size: medium; margin-bottom: .5ex;}
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div {border: 1px solid red;}
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div div {border: 1px solid blue;}
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a:link img, a:visited img { border-style: none;}
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.admin {
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background-color: #E0E0FF;
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width: 15ex;
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margin: 2ex;
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padding: 1ex;
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text-align: center;
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font-size: .85em;
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border: 0;
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z-index: 10;
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}
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-->
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</style>
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</head>
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<body>
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<h1>Use only <number> for line-height</h1>
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<h2>unless you like solving inexplicable inheritance problems or setting an explicit line-height on every element</h2>
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<h3>div {line-height: 1}; div div {font-size: 200%}</h3>
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<div style="line-height: 1;">The quick brown fox<br>jumps over the crazy
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<div style="font-size: 200%;">The quick brown fox<br>jumps over the crazy</div></div>
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<h3>div {line-height: 1em}; div div {font-size: 200%}</h3>
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<div style="line-height: 1em;">The quick brown fox<br>jumps over the crazy
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<div style="font-size: 200%;">The quick brown fox<br>jumps over the crazy</div></div>
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<h3>div {line-height: 100%}; div div {font-size: 200%}</h3>
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<div style="line-height: 100%;">The quick brown fox<br>jumps over the crazy
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<div style="font-size: 200%;">The quick brown fox<br>jumps over the crazy</div></div>
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<div class="updir" style="border: 0; margin-top: 2ex;">
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<p>When rendered according to the
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<a href="http://www.w3.org/TR/CSS21/visudet.html#propdef-line-height">css 2.1 spec</a>,
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the 200% text in the second two div divs, those for which line-height of the parent
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are specified in em or %, will overlap, the child divs being 1/2 the height of their containing
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divs; while the first div div will be 2/3 the height of its containing div,
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and its text won't overlap. The overlapping text in the latter div divs is because the spec requires the calculated
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line-height specified in em or % be inherited by the children. In contrast, it is <number> itself that is inherited by
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the children, which allows the line-height specified to be applied in reference to the font-size of the child div instead of
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the ancestor.</p>
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<hr>
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<a href="http://fm.no-ip.com/Auth/IE/line-heightIE.html">IE has an additional problem with line-height.</a>
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<hr>
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</div>
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<div class="admin">
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<a href="http://validator.w3.org/check/referer">
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<img src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!" height="31" width="88"></a>
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<br>
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Last Modified<br>2005.11.29<br>© Felix Miata<br>
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<A HREF="http://fm.no-ip.com/Auth/">Felix's Home</A>
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</div>
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</body>
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</html> |