The :first-child CSS pseudo-class represents the first element among a group of sibling elements.
/* Selects any <p> element that is the first child of its parent element */
p:first-child {
  color: lime;
  background-color: black;
}
Note: As originally defined, the selected element had to have a parent. Beginning with Selectors Level 4, this is no longer required.
Syntax
:first-child
Examples
Example 1
HTML
<div>
  <p>This p is styled, as it is a p AND the first
     child of its parent.</p>
  <p>This p is not styled; it is not the first child!</p>
</div>
<div>
  <h2>This h2 is not styled; it is not a p!</h2>
  <p>This p is not styled; it is not the first child!</p>
</div>
CSS
p:first-child {
  color: lime;
  background-color: black;
  padding: 5px;
}
Result
Example 2 - Using a list
HTML
<ul> <li>List 1</li> <li>List 2</li> <li>List 3</li> </ul>
CSS
li{
  color: blue;
}
li:first-child {
  color: green;
}
Result
Specifications
| 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. | 
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari | 
|---|---|---|---|---|---|---|
| Basic support | 4.0 | (Yes) | 3.0 (1.9) | 7[1] | 9.5 | 4 | 
| No parent required | 57 | ? | 51 (51)[2] | ? | 44 | ? | 
| Feature | Android Webview | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | 
|---|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | 1.0 (1.9.1) | 7[1] | 10 | 3.1 | 
| No parent required | 57 | 57 | 51.0 (51)[2] | ? | ? | 44 | ? | 
[1] Internet Explorer 7 doesn't update the styles when elements are added dynamically. In Internet Explorer 8, if an element is inserted dynamically by clicking on a link the first-child style isn't applied until the link loses focus.
[2] See bug 1300374.
See also
Document Tags and Contributors
    
    Tags: 
    
  
                    
                       Contributors to this page: 
        yisibl, 
        chrisdavidmills, 
        mfluehr, 
        jpmedley, 
        erikadoyle, 
        Sebastianz, 
        KonstantinYegupov, 
        jsx, 
        MusikAnimal, 
        TylerH, 
        tregagnon, 
        kscarfone, 
        Tripad, 
        teoli, 
        Sheppy, 
        brianloveswords, 
        enderandpeter, 
        McGurk, 
        myakura, 
        Miken32, 
        Wjjohnst, 
        Fredchat, 
        Mgjbot, 
        DBaron, 
        Nickolay, 
        Jethro
                    
                    
                       Last updated by:
                      yisibl,