【发布时间】：2018-06-25 13:22:23
【问题描述】：
我想看看是否可以在 Bootstrap Accordion 标题的右侧添加箭头。
我希望手风琴折叠时箭头从下变为上，这很复杂吗？
我只希望标题带有箭头并在折叠时更改它们，但我很难弄清楚这一点。
代码如下：
#AccordionHeadings {
font-weight: bolder;
color: slategrey;
font-size: medium;
}
.small:hover {
background-color: #F8E498!important;
}
.list-group-item h5 {
margin-left: 10px;
}
#AccordionText {
margin-bottom: 0px!important;
color: gray;
margin-left: 10px;
}
#AccordIcon {
padding-right: 10px;
height: 25px;
width: 25px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script type="text/javascript" src="//code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js" integrity="sha384-smHYKdLADwkXOn1EmN1qk/HfnUcbVRZyYmZ4qpPea6sjB/pTJ0euyQp0Mk8ck+5T" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB" crossorigin="anonymous">
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<div class="row">
<div class="col-12 col-md-10 col-md-8">
<h4>Choose the right app for the job!</h4>
<hr style="margin-top: 10px;" />
<div class="panel-group" id="accordion">
<div class="panel panel-default">
<a href="#" class="list-group-item" data-toggle="collapse" data-target="#s0" data-parent="#accordion" style="background-color: #e5edf4;">
<img id="AccordIcon" src="https://image.flaticon.com/icons/svg/148/148946.svg" />
<span id="AccordionHeadings">File Storage and Sharing</span><span class="glyphicon glyphicon-menu-down pull-right"></span></a>
<div id="s0" class="sublinks collapse">
<!-- sublinks collapse -->
<a class="list-group-item small d-flex align-items-center" href="/TrainingResourceCenter/O365Training/Pages/OneDrive.aspx">
<img class="img-fluid" style="height: 32px; width: 45px;" src="https://i.imgur.com/e0a3j2l.png" />
<div class="">
<h5>OneDrive</h5>
<p id="AccordionText">Store your files in one place, share them with others, and get them from any device connected to the Internet.
</p>
</div>
</a>
<a class="list-group-item small d-flex align-items-center" href="/TrainingResourceCenter/O365Training/Pages/SharePointOnline.aspx">
<img class="img-fluid" style="height: 32px; width: 45px;" src="https://i.imgur.com/uii8cJt.png" />
<div>
<h5>SharePoint</h5>
<p id="AccordionText">Share and manage content, knowledge, and applications to empower teamwork and quickly find information within your organization.</p>
</div>
</a>
<a class="list-group-item small d-flex align-items-center" href="/TrainingResourceCenter/O365Training/Pages/Teams.aspx">
<img class="img-fluid" style="height: 32px; width: 45px;" src="https://i.imgur.com/fV0AGNi.png" />
<div>
<h5>Teams</h5>
<p id="AccordionText">Microsoft Teams is a chat-based workspace offered in Office 365. Teams makes collaborating with your team easy.
</p>
</div>
</a>
</div>
</div>
</div>
</div>
</div>
</body>
</html>更新
感谢 Stack Overflow 上出色的贡献者的帮助，我现在已经开始使用它了，但我遇到了一个小问题。
这是我目前遇到的问题。
页面加载时：（为什么页面加载时箭头不指向下方？）
在第一次 Accordion 点击时：（现在图标是正确的）
在第二次 Accordion 点击时：（现在完美）
代码：
.panel-title:after {
font-family: FontAwesome;
content: "\f106";
float: right;
color: grey;
}
.panel-title.collapsed:after {
content: "\f107";
} <a href="#" class="list-group-item panel-title" data-toggle="collapse" data-target="#s0" data-parent="#accordion" style="background-color: #e5edf4;">
<img id="AccordIcon" src="https://image.flaticon.com/icons/svg/148/148946.svg" />
<span id="AccordionHeadings">File Storage and Sharing</span></a>
<div id="s0" class="sublinks collapse"> <!-- sublinks collapse -->
<a class="list-group-item small" href="/TrainingResourceCenter/O365Training/Pages/OneDrive.aspx">
<div class="col-md-1">
<img style="height: 32px; width: 45px;" src="/TrainingResourceCenter/O365Training/PublishingImages/Homepage/OneDriveAccordion.png" />
</div>
<div class="col-md-11">
<h5>OneDrive</h5>
<p id="AccordionText">Store your files in one place, share them
with others, and get them from any device connected to the
Internet.</p>
</div>
</a>【问题讨论】：
-
@Robert，我试过这种方法，但对我没有太大帮助，我现在会更新帖子。
-
@Robert，我已更新页面以反映我当前的问题。
-
请在问题末尾进行更新。这将有助于未来的读者，他们没有看过原版，并且一开始的更新会让他们感到困惑。
标签： html twitter-bootstrap css