reference/html-encyclopedia/FieldSet.html

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<h1>Fieldset examples</h1>

<h2>Fieldsets take HTML captions</h2>
Everything below is confirmed to work in FF 1.5, FF 2.0, IE 6, IE 7, Safari 3.1

<fieldset>
  <legend><b>Bold</b> is supported</legend>
  <button>Button</button>
</fieldset>

<fieldset>
  <legend><u>Underline</u> is supported</legend>
  <button>Button</button>
</fieldset>

<fieldset>
  <legend><button>Buttons</button> are supported</legend>
  <button>Button</button>
</fieldset>

<fieldset>
  <legend><img src="http://www.google.com/images/logo.gif"> (images are supported)</legend>
  <button>Button</button>
</fieldset>

<fieldset>
  <legend>
    <table>
      <tr><td colspan="2">Tables work</td></tr>
      <tr><td>row 1, col 1</td><td>row 1, col 2</td></tr>
      <tr><td>row 2, col 1</td><td>row 2, col 2</td></tr>
    </table>
  </legend>
  <button>Button</button>
</fieldset>
  
<fieldset>
  <legend>
    <span><input id="mycheckbox" type="checkbox"><label for="mycheckbox">GWT-structured checkboxes work</label></span>
  </legend>
  <button>Button</button>
</fieldset>
  
<h2>Fieldsets without a &lt;legend&gt; element shows no gap</h2>
<fieldset>
  <button>Button</button>
</fieldset>

<h2>Fieldsets with an empty &lt;legend&gt; element show a gap in some browsers</h2>
<fieldset>
  <legend></legend>
  <button>Button</button>
</fieldset>

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