<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div class="container">
<div class="row">
<h2>Create your snippet's HTML, CSS and Javascript in the editor tabs</h2>
</div>
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
Launch demo modal
</button>
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">参与的项目</h4>
</div>
<div class="modal-body">
<div class="panel-group" role="tablist">
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="collapseListGroupHeading1">
<h4 class="panel-title">
<a class="collapsed" role="button" data-toggle="collapse" href="#collapseListGroup1" aria-expanded="false" aria-controls="collapseListGroup1">
Collapsible list group
</a>
</h4>
</div>
<div id="collapseListGroup1" class="panel-collapse collapse" role="tabpanel" aria-labelledby="collapseListGroupHeading1" aria-expanded="false" style="height: 0px;">
<ul class="list-group">
<li class="list-group-item">Bootply</li>
<li class="list-group-item">One itmus ac facilin</li>
<li class="list-group-item">Second eros</li>
