:focus-within CSS pseudo-class
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
The :focus-within CSS pseudo-class matches an element if the element or any of its descendants are focused. In other words, it represents an element that is itself matched by the :focus pseudo-class or has a descendant that is matched by :focus. (This includes descendants in shadow trees.)
Try it
label {
display: block;
margin-top: 1em;
}
label:focus-within {
font-weight: bold;
}
<form>
<p>Which flavor would you like to order?</p>
<label>Full Name: <input name="firstName" type="text"></label>
<label>Flavor:
<select name="flavor">
<option>Cherry</option>
<option>Green Tea</option>
<option>Moose Tracks</option>
<option>Mint Chip</option>
</select>
</label>
</form>
This selector is useful, to take a common example, for highlighting an entire <form> container when the user focuses on one of its <input> fields.
Syntax
css
:focus-within {
/* ... */
}
Examples
In this example, the form will receive special coloring styles when either text input receives focus.
HTML
html
<p>Try typing into this form.</p>
<form>
<label for="given_name">Given Name:</label>
<input id="given_name" type="text" />
<br />
<label for="family_name">Family Name:</label>
<input id="family_name" type="text" />
</form>
CSS
css
form {
border: 1px solid;
color: gray;
padding: 4px;
}
form:focus-within {
background: #ffff88;
color: black;
}
input {
margin: 4px;
}
Result
Specifications
| Specification |
|---|
| Selectors Level 4 # the-focus-within-pseudo |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
:focus-within
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support