我有一个带有侧边栏的网站，如果某些元素具有currentPage类，我希望它们的背景颜色为黄色。它可以与“主页”选项卡一起使用，但是我试图对我的一个嵌套选项卡进行相同的操作，在这种情况下，“项目”中的“ tagger.site”，我添加了相同的类元素，但不会更改背景颜色变为黄色，即使我添加！important字符串也是如此。有什么方法可以迫使我的背景颜色改变？还是我需要更改currentPage的CSS选择器
https://jsfiddle.net/martinradio/a0k2c5rv/12/
/*
DEMO STYLE
*/
@import "https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700";
body {
font-family: 'Poppins', sans-serif;
background: #fafafa;
}
p {
font-family: 'Poppins', sans-serif;
font-size: 1.1em;
font-weight: 300;
line-height: 1.7em;
color: #999;
}
.btn-info {
color: #fff;
background-color: #b81717;
border-color: #52b817;
}
a,
a:hover,
a:focus {
color: inherit;
text-decoration: none;
transition: all 0.3s;
}
.navbar {
padding: 15px 10px;
background: #fff;
border: none;
border-radius: 0;
margin-bottom: 40px;
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}
.navbar-btn {
box-shadow: none;
outline: none !important;
border: none;
}
.line {
width: 100%;
height: 1px;
border-bottom: 1px dashed #ddd;
margin: 40px 0;
}
/* ---------------------------------------------------
SIDEBAR STYLE
----------------------------------------------------- */
.wrapper {
display: flex;
width: 100%;
align-items: stretch;
}
#sidebar {
min-width: 250px;
max-width: 250px;
background: #EAE7DC; /* NAVBAR BACKGROUND */
color: rgb(0, 0, 0);
transition: all 0.3s;
}
#sidebar.active {
margin-left: -250px;
}
#sidebar .sidebar-header {
padding: 20px;
/* background: #6d7fcc; */
}
#sidebar ul.components {
/* padding: 20px 0; */
/* border-bottom: 1px solid #47748b; */
}
#sidebar ul p {
color: #fff;
padding: 10px;
}
#sidebar ul li a {
padding: 10px;
font-size: 1.1em;
display: block;
}
.currentPage{
background: #ffbd00 !important;
}
#sidebar ul li a:hover {
color: #000;
background: #D7D1BC; /* hover tab color */
}
#sidebar ul li.active>a,
a[aria-expanded="true"] {
/* color: #fff; */
background: #d1cbba; /* active tab */
}
a[data-toggle="collapse"] {
position: relative;
}
.dropdown-toggle::after {
display: block;
position: absolute;
top: 50%;
right: 20px;
transform: translateY(-50%);
}
ul ul a {
font-size: 0.9em !important;
padding-left: 30px !important;
background: #e4dece; /* tab list color */
}
ul.CTAs {
padding: 20px;
}
ul.CTAs a {
text-align: center;
font-size: 0.9em !important;
display: block;
border-radius: 5px;
margin-bottom: 5px;
}
/* ---------------------------------------------------
CONTENT STYLE
----------------------------------------------------- */
#content {
width: 100%;
padding: 20px;
min-height: 100vh;
transition: all 0.3s;
}
/* ---------------------------------------------------
MEDIAQUERIES
----------------------------------------------------- */
@media (max-width: 768px) {
#sidebar {
margin-left: -250px;
}
#sidebar.active {
margin-left: 0;
}
#sidebarCollapse span {
display: none;
}
}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>mr.me</title>
<!-- Bootstrap CSS CDN -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
<!-- Our Custom CSS -->
<link rel="stylesheet" href="style.css">
<!-- Font Awesome JS -->
<script defer src="https://use.fontawesome.com/releases/v5.0.13/js/solid.js" integrity="sha384-tzzSw1/Vo+0N5UhStP3bvwWPq+uvzCMfrN1fEFe+xBmv1C/AtVX5K0uZtmcHitFZ" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.0.13/js/fontawesome.js" integrity="sha384-6OIrr52G08NpOFSZdxxz1xdNSndlD4vdcf/q2myIUVO0VsqaGHJsB0RaBE01VTOY" crossorigin="anonymous"></script>
</head>
<body>
<div class="wrapper" class="toggled">
<!-- Sidebar -->
<nav id="sidebar">
<div class="sidebar-header">
<h3>Mrr</h3>
</div>
<ul class="list-unstyled components">
<li class="currentPage" >
<a href="#" >Home</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#projectsSubmenu" data-toggle="collapse" aria-expanded="false" class="dropdown-toggle">Projects</a>
<ul class="collapse list-unstyled" id="projectsSubmenu">
<li class='currentPage'>
<a href="#">tagger.site</a>
</li>
<li>
<a href="#">discogstagger.site</a>
</li>
<li>
<a href="#">popularify.biz</a>
</li>
<li>
<a href="#">more projects</a>
</li>
</ul>
</li>
<li>
<a href="#contactSubmenu" data-toggle="collapse" aria-expanded="false" class="dropdown-toggle">Contact</a>
<ul class="collapse list-unstyled" id="contactSubmenu">
<li>
<a href="#">Email</a>
</li>
<li>
<a href="#">Github</a>
</li>
<li>
<a href="#">LinkedIn</a>
</li>
<li>
<a href="#">Resume</a>
</li>
</ul>
</li>
<li>
<a href="#blogSubmenu" data-toggle="collapse" aria-expanded="false" class="dropdown-toggle">Blog</a>
<ul class="collapse list-unstyled" id="blogSubmenu">
<li>
<a href="#">Post 1</a>
</li>
<li>
<a href="#">Post 3</a>
</li>
<li>
<a href="#">Post 4</a>
</li>
<li>
<a href="#">Post 5</a>
</li>
</ul>
</li>
</ul>
</nav>
<!-- Page Content -->
<div id="content">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<button type="button" id="sidebarCollapse" class="btn btn-info">
<i class="fas fa-align-left"></i>
<span>Toggle Sidebar</span>
</button>
</div>
</nav>
<h2>Collapsible Sidebar Using Bootstrap 4</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<div class="line"></div>
<h2>Lorem Ipsum Dolor</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<div class="line"></div>
<h2>Lorem Ipsum Dolor</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<div class="line"></div>
<h3>Lorem Ipsum Dolor</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
</div>
</div>
<!-- jQuery CDN - Slim version (=without AJAX) -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<!-- Popper.JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
<!-- Bootstrap JS -->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
<script type="text/javascript">
$(document).ready(function () {
$('#sidebarCollapse').on('click', function () {
$('#sidebar').toggleClass('active');
});
});
</script>
</body>
</html>
答案 0 :(得分：1)
将CSS选择器从.currentPage更改为.currentPage, .currentPage *，以选择具有currentPage类的元素的所有后代。
/*
DEMO STYLE
*/
@import "https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700";
body {
font-family: 'Poppins', sans-serif;
background: #fafafa;
}
p {
font-family: 'Poppins', sans-serif;
font-size: 1.1em;
font-weight: 300;
line-height: 1.7em;
color: #999;
}
.btn-info {
color: #fff;
background-color: #b81717;
border-color: #52b817;
}
a,
a:hover,
a:focus {
color: inherit;
text-decoration: none;
transition: all 0.3s;
}
.navbar {
padding: 15px 10px;
background: #fff;
border: none;
border-radius: 0;
margin-bottom: 40px;
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}
.navbar-btn {
box-shadow: none;
outline: none !important;
border: none;
}
.line {
width: 100%;
height: 1px;
border-bottom: 1px dashed #ddd;
margin: 40px 0;
}
/* ---------------------------------------------------
SIDEBAR STYLE
----------------------------------------------------- */
.wrapper {
display: flex;
width: 100%;
align-items: stretch;
}
#sidebar {
min-width: 250px;
max-width: 250px;
background: #EAE7DC; /* NAVBAR BACKGROUND */
color: rgb(0, 0, 0);
transition: all 0.3s;
}
#sidebar.active {
margin-left: -250px;
}
#sidebar .sidebar-header {
padding: 20px;
/* background: #6d7fcc; */
}
#sidebar ul.components {
/* padding: 20px 0; */
/* border-bottom: 1px solid #47748b; */
}
#sidebar ul p {
color: #fff;
padding: 10px;
}
#sidebar ul li a {
padding: 10px;
font-size: 1.1em;
display: block;
}
.currentPage, .currentPage *{
background: #ffbd00 !important;
}
#sidebar ul li a:hover {
color: #000;
background: #D7D1BC; /* hover tab color */
}
#sidebar ul li.active>a,
a[aria-expanded="true"] {
/* color: #fff; */
background: #d1cbba; /* active tab */
}
a[data-toggle="collapse"] {
position: relative;
}
.dropdown-toggle::after {
display: block;
position: absolute;
top: 50%;
right: 20px;
transform: translateY(-50%);
}
ul ul a {
font-size: 0.9em !important;
padding-left: 30px !important;
background: #e4dece; /* tab list color */
}
ul.CTAs {
padding: 20px;
}
ul.CTAs a {
text-align: center;
font-size: 0.9em !important;
display: block;
border-radius: 5px;
margin-bottom: 5px;
}
/* ---------------------------------------------------
CONTENT STYLE
----------------------------------------------------- */
#content {
width: 100%;
padding: 20px;
min-height: 100vh;
transition: all 0.3s;
}
/* ---------------------------------------------------
MEDIAQUERIES
----------------------------------------------------- */
@media (max-width: 768px) {
#sidebar {
margin-left: -250px;
}
#sidebar.active {
margin-left: 0;
}
#sidebarCollapse span {
display: none;
}
}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>mr.me</title>
<!-- Bootstrap CSS CDN -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
<!-- Our Custom CSS -->
<link rel="stylesheet" href="style.css">
<!-- Font Awesome JS -->
<script defer src="https://use.fontawesome.com/releases/v5.0.13/js/solid.js" integrity="sha384-tzzSw1/Vo+0N5UhStP3bvwWPq+uvzCMfrN1fEFe+xBmv1C/AtVX5K0uZtmcHitFZ" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.0.13/js/fontawesome.js" integrity="sha384-6OIrr52G08NpOFSZdxxz1xdNSndlD4vdcf/q2myIUVO0VsqaGHJsB0RaBE01VTOY" crossorigin="anonymous"></script>
</head>
<body>
<div class="wrapper" class="toggled">
<!-- Sidebar -->
<nav id="sidebar">
<div class="sidebar-header">
<h3>Mrr</h3>
</div>
<ul class="list-unstyled components">
<li class="currentPage" >
<a href="#" >Home</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#projectsSubmenu" data-toggle="collapse" aria-expanded="false" class="dropdown-toggle">Projects</a>
<ul class="collapse list-unstyled" id="projectsSubmenu">
<li class='currentPage'>
<a href="#">tagger.site</a>
</li>
<li>
<a href="#">discogstagger.site</a>
</li>
<li>
<a href="#">popularify.biz</a>
</li>
<li>
<a href="#">more projects</a>
</li>
</ul>
</li>
<li>
<a href="#contactSubmenu" data-toggle="collapse" aria-expanded="false" class="dropdown-toggle">Contact</a>
<ul class="collapse list-unstyled" id="contactSubmenu">
<li>
<a href="#">Email</a>
</li>
<li>
<a href="#">Github</a>
</li>
<li>
<a href="#">LinkedIn</a>
</li>
<li>
<a href="#">Resume</a>
</li>
</ul>
</li>
<li>
<a href="#blogSubmenu" data-toggle="collapse" aria-expanded="false" class="dropdown-toggle">Blog</a>
<ul class="collapse list-unstyled" id="blogSubmenu">
<li>
<a href="#">Post 1</a>
</li>
<li>
<a href="#">Post 3</a>
</li>
<li>
<a href="#">Post 4</a>
</li>
<li>
<a href="#">Post 5</a>
</li>
</ul>
</li>
</ul>
</nav>
<!-- Page Content -->
<div id="content">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<button type="button" id="sidebarCollapse" class="btn btn-info">
<i class="fas fa-align-left"></i>
<span>Toggle Sidebar</span>
</button>
</div>
</nav>
<h2>Collapsible Sidebar Using Bootstrap 4</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<div class="line"></div>
<h2>Lorem Ipsum Dolor</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<div class="line"></div>
<h2>Lorem Ipsum Dolor</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
<div class="line"></div>
<h3>Lorem Ipsum Dolor</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
</div>
</div>
<!-- jQuery CDN - Slim version (=without AJAX) -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<!-- Popper.JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
<!-- Bootstrap JS -->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
<script type="text/javascript">
$(document).ready(function () {
$('#sidebarCollapse').on('click', function () {
$('#sidebar').toggleClass('active');
});
});
</script>
</body>
</html>
答案 1 :(得分：0)
只需添加.currentPage a {}或将类直接添加到定位标记