:first-child
Baseline Widely available *
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
* Some parts of this feature may have varying levels of support.
CSS :first-child 의사 클래스는 형제 요소 중 제일 첫 요소를 나타냅니다.
css
/* Selects any <p> that is the first element
among its siblings */
p:first-child {
color: lime;
}
참고 : 초기 정의에서는 부모가 있는 요소만 선택할 수 있었습니다. Selectors Level 4부터는 이 제한이 사라졌습니다.
구문
Error: could not find syntax for this item
예제
기본 예제
HTML
html
<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>
CSS
css
p:first-child {
color: lime;
background-color: black;
padding: 5px;
}
결과
목록 스타일링
HTML
html
<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>
CSS
css
ul li {
color: blue;
}
ul li:first-child {
color: red;
font-weight: bold;
}
결과
명세
| Specification |
|---|
| Selectors Level 4 # first-child-pseudo |