fieldset (HTML element)

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The fieldset is a useful tool for organizing and grouping related items within a form, and has been used for a long time in desktop applications. When it’s combined with the legend (which is contained inside the fieldset, and is a required element if you use the fieldset), it has the effect of creating a box around the grouped items and showing a description to the right of each item, as shown in Figure 1.

Figure 1. A fieldset with the legend of “Friendship” grouping related items in a form A fieldset with the legend of ‘friendship’ grouping related items in the form

It’s also possible to nest fieldsets as a means to subgroup items, as shown in Figure 2.

Figure 2. Nested fieldsets, as shown on’s Markup Maker tool Nested fieldsets, as shown on Accessify’s Markup Maker tool


This fieldset element is used to group three related XFN attributes (see the Microformats section regarding XFN):

      <input type="radio" name="radFriendship" value="Not_Applicable"
      <label for="radFriendNot_Applicable">Not_Applicable</label>
      <input type="radio" name="radFriendship" value="acquaintance"
      <label for="radFriendaquaintence">acquaintance</label>
      <input type="radio" name="radFriendship" value="friend"
     <label for="radFriendfriend">friend</label>

Use This For …

The fieldset attribute is used to logically group data items that share some characteristics. For example, you may wrap a fieldset around personal details, and another around work details, when capturing information about a visitor in an application form.


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It causes no compatibility issues, and has excellent support across all tested browsers.

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