CSS 少第一个孩子
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Less first-child
提问by Rhyso
Why isn't my first-child selector working in Less?
为什么我的第一个孩子选择器不能在 Less 中工作？
.leftPanel{
margin:20px;
float:left;
display:inline;
width:620px;
margin-left:10px;
select{
width:300px;
&:first-child{
margin-right: 30px;
}
}
}
采纳答案by Kaivosukeltaja
You are specifying that if the first child element inside a .leftPanelis a <select>, it should have margin-right: 30px;. If you are trying to apply this rule to the first child element insidethe <select>(which should always be an <option>), try replacing &:first-childwith option:first-child.
您指定如果 a 中的第一个子元素.leftPanel是 a <select>，则它应该有margin-right: 30px;. 如果你正在尝试此规则适用于第一个子元素内的<select>（这应该永远是一个<option>），尝试更换&:first-child用option:first-child。
