CSS最后一个子项选择器:选择特定类的最后一个元素，而不是父类中的最后一个子项？

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<div class="commentList">
   <article class="comment " id="com21"></article>
   <article class="comment " id="com20"></article>
   <article class="comment " id="com19"></article>
   <div class="something"> hello </div>
</div>

.comment {
    width:470px;
    border-bottom:1px dotted #f0f0f0;
    margin-bottom:10px;
.comment:last-child {
    border-bottom:none;
    margin-bottom:0;
}

body {
  background: black;
.comment {
  width: 470px;
  border-bottom: 1px dotted #f0f0f0;
  margin-bottom: 10px;
.comment:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
}

<div class="commentList">
  <article class="comment " id="com21"></article>
  <article class="comment " id="com20"></article>
  <article class="comment " id="com19"></article>
  <div class="something"> hello </div>
</div>

/* 1: Apply style to ALL instances */
#header .some-class {
  padding-right: 0;
/* 2: Remove style from ALL instances except FIRST instance */
#header .some-class~.some-class {
  padding-right: 20px;
}

<!doctype html>
<head><title>CSS Test</title>
<style type="text/css">
.some-class { margin: 0; padding: 0 20px; list-style-type: square; }
.lfloat { float: left; display: block; }
.rfloat { float: right; display: block; }
/* apply style to last instance only */
#header .some-class {
  border: 1px solid red;
  padding-right: 0;
#header .some-class~.some-class {
  border: 0;
  padding-right: 20px;
</style>
</head>
<div id="header">
  <img src="some_image" title="Logo" class="lfloat no-border"/>
  <ul class="some-class rfloat">
    <li>List 1-1</li>
    <li>List 1-2</li>
    <li>List 1-3</li>
  <ul class="some-class rfloat">
    <li>List 2-1</li>
    <li>List 2-2</li>
    <li>List 2-3</li>
  <ul class="some-class rfloat">
    <li>List 3-1</li>
    <li>List 3-2</li>
    <li>List 3-3</li>
  <img src="some_other_img" title="Icon" class="rfloat no-border"/>
</body>
</html>

div.commentList > article.comment:not(:last-child):last-of-type
    color:red; /*or whatever...*/
}

.page.one .page-container .comment:last-child {
  color: red;
.page.two .page-container:last-child .comment:last-child {
  color: blue;
}

<p> When you use .comment:last-child </p>
<p> you only get the last comment in both parents </p>
<div class="page one">
  <div class="page-container">
    <p class="comment"> Something </p>
    <p class="comment"> Something </p>
  <div class="page-container">
    <p class="comment"> Something </p>
    <p class="comment"> Something </p>
<p> When you use .page-container:last-child .comment:last-child </p>
<p> you get the last page-container's, last comment </p>
<div class="page two">
  <div class="page-container">
    <p class="comment"> Something </p>
    <p class="comment"> Something </p>

CSS最后一个子项选择器:选择特定类的最后一个元素，而不是父类中的最后一个子项？

5 个回答