HTML <fieldset> style Attribute

The style attribute on a <fieldset> tag assigns a unique style to the fieldset. A style contains one or more CSS property/value pairs that define the appearance of the fieldset.

Example

#

A style attribute on a <fieldset> element.

Customer Information





<form action="/tutorial/action.html">
  <fieldset style="padding:30px; border:3px solid #4238ca; background:#f6f8ff;">
    <legend>Customer Information</legend>
  
    <input type="text" placeholder="First name" name="firstname"><br /><br />
    <input type="text" placeholder="Last name" name="lastname"><br /><br />
    <input type="text" placeholder="City" name="city"><br /><br />
    <div>
      <input type="checkbox" id="insurance" name="hasinsurance" value="hasinsurance">
      <label for="insurance">Has Insurance</label>
    </div>
    
    <input type="submit" value="Submit" />
  </fieldset>
</form>

Using style

The style attribute specifies the style, i.e. look and feel, of the <fieldset> element.

A style contains any number of CSS property/value pairs, separated by semicolons (;).

The style attribute overrides any other style that was defined in a <style> tag or an external CSS file.

This inline styling affects the current <fieldset> element only.


Syntax

<fieldset style="CSS-styles">

Values

#

Value Description
CSS-styles One or more CSS property/value pairs separated by semicolons (;).

More Examples

A style attribute on a <fieldset> element.
Clicking the button toggles the border color.

Customer Information







<form action="/tutorial/action.html">
  <fieldset id="myfieldset" 
            style="padding:30px; border:3px solid navy; background:aliceblue;">
    <legend>Customer Information</legend>
  
    <input type="text" placeholder="First name" name="firstname"><br /><br />
    <input type="text" placeholder="Last name" name="lastname"><br /><br />
    <input type="text" placeholder="City" name="city"><br /><br />
    <div>
      <input type="checkbox" id="insurance" name="hasinsurance" value="hasinsurance">
      <label for="insurance">Has Insurance</label>
    </div>
    
    <input type="submit" value="Submit" />
  </fieldset>
</form>

<br/><br/>
<button type="button" onclick="toggle();">Toggle style</button>

<script>
  let toggle = () => {

    let element = document.getElementById("myfieldset");

    if (element.style.borderColor === "navy") {
       element.style.borderColor = "orchid";
    } else {
       element.style.borderColor = "navy";
    }
  }
</script>

Code explanation

The style attribute assigns a border color to the <fieldset> element.

Clicking the button calls JavaScript that changes the border color.


Browser support

Here is when style support started for each browser:

Chrome
1.0 Sep 2008
Firefox
1.0 Sep 2002
IE/Edge
1.0 Aug 1995
Opera
1.0 Jan 2006
Safari
1.0 Jan 2003

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