Bootstrap Accordion With Arrows


Answer :

Problem is in space between selectors:

.panel-heading [data-toggle="collapse"]:after               ^------- // remove this space to make this selector work

Now you are selecting all elements having data-toggle attribute which are descendants of .panel-heading. It should be:

.panel-heading[data-toggle="collapse"]:after 

.panel-heading {   position: relative; } .panel-heading[data-toggle="collapse"]:after {   font-family: 'Glyphicons Halflings';   content: "\e072"; /* "play" icon */   position: absolute;   color: #b0c5d8;   font-size: 18px;   line-height: 22px;   right: 20px;   top: calc(50% - 10px);    /* rotate "play" icon from > (right arrow) to down arrow */   -webkit-transform: rotate(-90deg);   -moz-transform:    rotate(-90deg);   -ms-transform:     rotate(-90deg);   -o-transform:      rotate(-90deg);   transform:         rotate(-90deg); } .panel-heading[data-toggle="collapse"].collapsed:after {   /* rotate "play" icon from > (right arrow) to ^ (up arrow) */   -webkit-transform: rotate(90deg);   -moz-transform:    rotate(90deg);   -ms-transform:     rotate(90deg);   -o-transform:      rotate(90deg);   transform:         rotate(90deg); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script> <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/> <!-- Accordion START -->       <div class="panel-group" id="accordion">         <div class="panel panel-default">           <div class="panel-heading accordion-toggle collapsed" data-toggle="collapse" data-parent="#accordion" data-target="#collapseOne">             <h4 class="panel-title">Test1</h4>            </div>           <div id="collapseOne" class="panel-collapse collapse">             <div class="panel-body">               <p>sadfsadfsdaf sadf</p>             </div>           </div>         </div>         <div class="panel panel-default">           <div class="panel-heading accordion-toggle collapsed" data-toggle="collapse" data-parent="#accordion" data-target="#collapseTwo">             <h4 class="panel-title">Test2</h4>            </div>           <div id="collapseTwo" class="panel-collapse collapse">             <div class="panel-body"> <p> Bla bla bla </p>             </div>           </div>         </div>       </div>       <!-- Accordion END -->


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