The <div> and <span> elements, in conjunction with
the id and class attributes, offer a generic mechanism for
adding structure to documents. These elements define content to
be inline ( <span> ) or block-level ( <div> ) but
impose no other presentational idioms on the content. Thus,
authors may use these elements in conjunction with style sheets,
the lang attribute, etc., to tailor html to their own needs and
tastes.
Suppose, for example, that we wanted to generate an html
document based on a database of client information. Since html
does not include elements that identify objects such as
"client", "telephone number", "email address", etc., we use
and to achieve the desired structural
and presentational effects.
Left
Center
Right
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<a>
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<applet>
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<area>
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<base>
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<basefont>
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<bdo>
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<blockquote>
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<body>
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<br>
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<caption>
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<center>
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<code>
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<col>
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<colgroup>
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<dd>
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<del>
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<dfn>
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<dir>
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<div>
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<dl>
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<dt>
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<embed>
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<fieldset>
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<font>
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<form>
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<frame>
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<frameset>
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<h1>
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<head>
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<hr>
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<html>
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<iframe>
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<img>
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<input>
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<isindex>
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<kbd>
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<label>
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<legend>
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<li>
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<link>
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<map>
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markup
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<menu>
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<meta>
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<noframes>
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<noscript>
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<object>
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<ol>
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<optgroup>
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<option>
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<p>
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<param>
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<phrase>
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<pre>
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<samp>
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<script>
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<select>
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<span>
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<style>
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<sub>
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<sup>
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<table>
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<tbody>
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<td>
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<textarea>
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<tfoot>
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<th>
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<thead>
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<title>
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<tr>
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<ul>