The :first-child CSS pseudo-class represents the first element among a group of sibling elements.
/* Selects any <p> that is the first element
among its siblings */
p:first-child {
color: lime;
} Note: As originally defined, the selected element had to have a parent. Beginning with Selectors Level 4, this is no longer required.
:first-child
<div> <p>This text is selected!</p> <p>This text isn't selected.</p> </div> <div> <h2>This text isn't selected: it's not a `p`.</h2> <p>This text isn't selected.</p> </div>
p:first-child {
color: lime;
background-color: black;
padding: 5px;
}
<ul>
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3
<ul>
<li>Item 3.1</li>
<li>Item 3.2</li>
<li>Item 3.3</li>
</ul>
</li>
</ul> ul li {
color: blue;
}
ul li:first-child {
color: red;
font-weight: bold;
} | Specification | Status | Comment |
|---|---|---|
| Selectors Level 4 The definition of ':first-child' in that specification. | Working Draft | Matching elements are not required to have a parent. |
| Selectors Level 3 The definition of ':first-child' in that specification. | Recommendation | No change. |
| CSS Level 2 (Revision 1) The definition of ':first-child' in that specification. | Recommendation | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 4 | Yes | 3 | 7
|
9.5 | 3.1 |
| Matches elements with no parent | 57 | ? | 52 | ? | 44 | ? |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Yes | Yes | Yes | 4 | 9.5 | 4 | Yes |
| Matches elements with no parent | 57 | 57 | ? | 52 | 44 | ? | 7.0 |
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https://developer.mozilla.org/en-US/docs/Web/CSS/:first-child