html - 如何在引导程序 4 中删除手风琴卡标题中的底部边距?
问题描述
如何margin-top
从引导手风琴的卡头中删除。我想要margin-top
当折叠关闭时,但是当打开折叠然后删除margin-top
。因为当打开折叠时,折叠底部会显示更多空间。该问题的解决方案是什么,我还附上了我想要的图像。
img {
max-width: 100%;
}
#accordion .card-header {
position: relative;
background: transparent;
border: none;
border-radius: 0;
border-bottom: 2px solid #eee;
padding-left: 0;
padding-right: 0;
margin-top: 40px;
}
#accordion .card-header:before {
content: '';
position: absolute;
top: 0;
left: 0;
}
#accordion .card-header button {
padding-left: 0;
padding-right: 0;
text-transform: uppercase;
font-size: 20px;
line-height: 26px;
text-decoration: none;
color: #dc3545;
}
#accordion .card-header button:hover {
color: #313131;
}
.card {
border: none;
}
.collapse-content {
padding: 50px;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<section class="main-wraper">
<div class="container">
<div class="row">
<div class="col-12 text-center mt-4">
<h1>Faq</h1>
</div>
</div>
<div class="row">
<div class="col-12">
<div id="accordion">
<div class="card">
<div class="card-header" id="headingOne">
<h5 class="mb-0">
<button class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">Lorem Ipsum is simply 1</button>
</h5>
</div>
<div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordion">
<div class="row h-100">
<div class="col-md-6">
<img alt="" src="http://placekitten.com/1000/500" />
</div>
<div class="col-md-6 collapse-content">
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap.</p>
<button type="button" class="btn btn-danger">Submit</button>
</div>
</div>
</div>
</div>
<div class="card">
<div class="card-header" id="headingTwo">
<h5 class="mb-0">
<button class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">Lorem Ipsum is simply 2</button>
</h5>
</div>
<div id="collapseTwo" class="collapse" aria-labelledby="headingTwo" data-parent="#accordion">
<div class="row h-100">
<div class="col-md-6">
<img alt="" src="http://placekitten.com/1000/500" />
</div>
<div class="col-md-6 collapse-content">
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap.</p>
<button type="button" class="btn btn-danger">Submit</button>
</div>
</div>
</div>
</div>
<div class="card">
<div class="card-header" id="headingThree">
<h5 class="mb-0">
<button class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">Lorem Ipsum is simply 3</button>
</h5>
</div>
<div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordion">
<div class="row h-100">
<div class="col-md-6">
<img alt="" src="http://placekitten.com/1000/500" />
</div>
<div class="col-md-6 collapse-content">
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap.</p>
<button type="button" class="btn btn-danger">Submit</button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</section>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
解决方案
如果要删除折叠底部的多余空间,只需删除h-100
该类即可。
现在,对于您想要的交互,添加一个类以添加或删除margin-top
.
这应该有效:
CSS:
#accordion .card-header.active {
margin-top: 0;
}
注意:特异性很重要。
HTML(将“活动”类添加到已经打开的类中,否则您不必这样做):
<div class="card-header active" id="headingOne">
查询:
$('.card-header .btn').click(function() {
if (!$(this).parent().parent().hasClass('active')) {
$('.card-header').removeClass('active');
$(this).parent().parent().addClass('active')
} else {
$(this).parent().parent().removeClass('active')
}
}))
这首先删除了其余 div 的“活动”类,然后添加到当前单击的 div。
希望这可以帮助。
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