我有四个div卡，它们充当按钮，这样我就可以折叠和扩展卡行下的信息。当我点击一张卡时，信息会在下面展开，如果我点击另一张卡，它会折叠第一张信息，并展开第二张卡的信息。但当我出于某种原因试图实现这一点时，它并没有折叠卡1，而重新粘贴卡2的信息，它只是堆叠。我试着在这里查了一下，发现这个问题已经得到了答案。我实现了答案，但有些东西不起作用——有人能帮我找出原因吗。这是我提到的的答案
引导：展开时折叠其他部分
这就是那个帖子的答案。我把它放在代码中，但它不起作用。
应答的截屏
我也尝试过其他答案，但似乎都不起作用
这是我的代码
p, h1 {
font-family: 'Droid Sans', sans-serif;
}
.containerS {
margin-right: 2%;
margin-left: 2%;
}
.card:hover {
-webkit-box-shadow: -1px 9px 40px -12px rgba(0,0,0,0.75);
-moz-box-shadow: -1px 9px 40px -12px rgba(0,0,0,0.75);
box-shadow: -1px 9px 40px -12px rgba(0, 0, 0, 0.75);
transform: scale(1.02)
}
.card {
border-radius: 3px;
border: 1px solid #bb9c4c;
overflow: hidden;
padding-bottom:10px;
margin: 20px 0px 0px 0px;
align: center;
transition: transform .1s;
color: black;
}
.card img {
transition: transform .1s
}
.card img:hover {
-moz-transform: scale(1.1);
-webkit-transform: scale(1.1);
transform: scale(1.01);
}
.btn {
background-color: #bb9c4c;
border-color: #bb9c4c;
}
.card-body {
padding: 10px;
}
.services {
background-color:#242424;
color:white;
padding:90px 0 90px;
text-align:center;
overflow: hidden;
}
.services h1 {
font-size:2em;
padding-bottom: 30px;
}
.services h3 {
font-weight:normal;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link href='https://fonts.googleapis.com/css?family=Lato' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Pacifico' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Droid+Sans' rel='stylesheet' type='text/css'>
<title>Hello, world!</title>
</head>
<body>
<div class="services" id="services">
<div class="containerS">
<div class="row">
<div class="col-lg-12 col-md-12">
<h1>Meow</h1>
</div>
</div>
<div id="myGroup">
<div class="row">
<div id="mentor" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.2s">
<div class="card" style="width:100%;" data-toggle="collapse" data-target="#collapseExample1" data-parent="#myGroup" role="button" aria-expanded="false" aria-controls="collapseExample1">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 1</h5>
</div>
</div>
</div>
<div id="sales" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.3s">
<div class="card" style="width:100%;" data-toggle="collapse" data-target="#collapseExample2" data-parent="#myGroup" role="button" aria-expanded="false" aria-controls="collapseExample2">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 2</h5>
</div>
</div>
</div>
<div id="strat" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.4s">
<div class="card" style="width:100%" data-toggle="collapse" data-target="#collapseExample3" data-parent="#myGroup" role="button" aria-expanded="false" aria-controls="collapseExample3">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 3</h5>
</div>
</div>
</div>
<div id="security" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.5s">
<div class="card" style="width:100%;" data-toggle="collapse" data-target="#collapseExample4" data-parent="#myGroup" role="button" aria-expanded="false" aria-controls="collapseExample4">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 4</h5>
</div>
</div>
</div>
</div>
<div class="accordion-group">
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample1" style="width:100%;">
<div class="card card-body" style="width:100%">
1Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample2" style="width:100%;">
<div class="card card-body" style="width:100%">
2Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample3" style="width:100%;">
<div class="card card-body" style="width:100%">
3Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample4" style="width:100%;">
<div class="card card-body" style="width:100%">
4Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
</div>
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
</html>data-parent="#myGroup"应该在具有collapse类的div中
p, h1 {
font-family: 'Droid Sans', sans-serif;
}
.containerS {
margin-right: 2%;
margin-left: 2%;
}
.card:hover {
-webkit-box-shadow: -1px 9px 40px -12px rgba(0,0,0,0.75);
-moz-box-shadow: -1px 9px 40px -12px rgba(0,0,0,0.75);
box-shadow: -1px 9px 40px -12px rgba(0, 0, 0, 0.75);
transform: scale(1.02)
}
.card {
border-radius: 3px;
border: 1px solid #bb9c4c;
overflow: hidden;
padding-bottom:10px;
margin: 20px 0px 0px 0px;
align: center;
transition: transform .1s;
color: black;
}
.card img {
transition: transform .1s
}
.card img:hover {
-moz-transform: scale(1.1);
-webkit-transform: scale(1.1);
transform: scale(1.01);
}
.btn {
background-color: #bb9c4c;
border-color: #bb9c4c;
}
.card-body {
padding: 10px;
}
.services {
background-color:#242424;
color:white;
padding:90px 0 90px;
text-align:center;
overflow: hidden;
}
.services h1 {
font-size:2em;
padding-bottom: 30px;
}
.services h3 {
font-weight:normal;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link href='https://fonts.googleapis.com/css?family=Lato' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Pacifico' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Droid+Sans' rel='stylesheet' type='text/css'>
<title>Hello, world!</title>
</head>
<body>
<div class="services" id="services">
<div class="containerS">
<div class="row">
<div class="col-lg-12 col-md-12">
<h1>Meow</h1>
</div>
</div>
<div id="myGroup">
<div class="row">
<div id="mentor" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.2s">
<div class="card" style="width:100%;" data-toggle="collapse" data-target="#collapseExample1" role="button" aria-expanded="false" aria-controls="collapseExample1">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 1</h5>
</div>
</div>
</div>
<div id="sales" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.3s">
<div class="card" style="width:100%;" data-toggle="collapse" data-target="#collapseExample2" role="button" aria-expanded="false" aria-controls="collapseExample2">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 2</h5>
</div>
</div>
</div>
<div id="strat" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.4s">
<div class="card" style="width:100%" data-toggle="collapse" data-target="#collapseExample3" role="button" aria-expanded="false" aria-controls="collapseExample3">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 3</h5>
</div>
</div>
</div>
<div id="security" class="colo-lg-3 col-md-3 col-sm-3 col-xs-6 wow flipInY" data-wow-delay="0.5s">
<div class="card" style="width:100%;" data-toggle="collapse" data-target="#collapseExample4" role="button" aria-expanded="false" aria-controls="collapseExample4">
<img src="https://images.pexels.com/photos/104827/cat-pet-animal-domestic-104827.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Card One" class="card-img-top" style="width:100%;">
<div class="card-body">
<h5 class="card-title">Meow 4</h5>
</div>
</div>
</div>
</div>
<div class="accordion-group">
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample1" data-parent="#myGroup" style="width:100%;">
<div class="card card-body" style="width:100%">
1Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample2" data-parent="#myGroup" style="width:100%;">
<div class="card card-body" style="width:100%">
2Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample3" data-parent="#myGroup" style="width:100%;">
<div class="card card-body" style="width:100%">
3Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
<div class="collapse colo-lg-12 col-md-12 indent" id="collapseExample4" data-parent="#myGroup" style="width:100%;">
<div class="card card-body" style="width:100%">
4Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.Mauris tempor vulputate dolor, nec convallis turpis luctus quis. Morbi id justo vel diam dignissim commodo. Aenean id luctus libero, vel gravida magna. Vestibulum ac purus lobortis, varius tellus non, rhoncus sapien. Mauris elementum, nisl sed interdum venenatis, metus enim pellentesque massa, eget laoreet eros ex vitae felis. Curabitur vitae rhoncus odio, sit amet porta tortor. Duis in mollis odio.
</div>
</div>
</div>
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
</html>