【示例】
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HTML
<p>valign: <span class="baseline"><img src="images/box.gif" title="baseline" /><sup>baseline</sup></span> <span class="sub"><img src="images/box.gif" title="sub" /><sub>sub</sub></span> <span class="super"><img src="images/box.gif" title="super" /><sup>super</sup></span> <span class="top"><img src="images/box.gif" title="top" /><sub>top</sub></span> <span class="text-top"><img src="images/box.gif" title="text-top" /><sup>text-top</sup></span> <span class="middle"><img src="images/box.gif" title="middle" /><sub>middle</sub></span> <span class="bottom"><img src="images/box.gif" title="bottom" /><sup>bottom</sup></span> <span class="text-bottom"><img src="images/box.gif" title="text-bottom" /><sub>text-bottom</sub></span> </p>
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CSS
body {font-size:48px;} p{ padding:0; background-image:url(images/dot.jpg), url(images/dot.jpg), url(images/dot.jpg), url(images/dot.jpg), url(images/dot.jpg); background-repeat:repeat-x, repeat-x, repeat-x, repeat-x, repeat-x; background-position:left 29px, left 41px, left 52px, left 67px, left 80px; } .baseline {vertical-align:baseline;} .sub {vertical-align:sub;} .super {vertical-align:super;} .top {vertical-align:top;} .text-top {vertical-align:text-top;} .middle {vertical-align:middle;} .bottom {vertical-align:bottom;} p>span {position:relative;} sub,sup { position:absolute; font-size:15px; color:green; width:60px; text-align:center; } sup { top:-26px; left:-22px; } sub { top:62px; left:-18px; }