Bootstrap accordion with arrows

Question

I have a simple question regarding the Bootstrap accordion.

I created an accordion witch is clickable on the header to expand. This works well but my problem is that the arrows are not show in the header.

 .panel-heading [data-toggle="collapse"]:after { font-family: 'Glyphicons Halflings'; content: "\\e072"; /* "play" icon */ float: right; color: #b0c5d8; font-size: 18px; line-height: 22px; /* 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="http://netdna.bootstrapcdn.com/bootstrap/3.0.2/js/bootstrap.min.js"></script> <link href="http://netdna.bootstrapcdn.com/bootstrap/3.0.2/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 -->

Answer 1

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 -->

Answer 2

No fonts (icons) needed:

I come with a simple solution:

.card-link::after {
    content: "";
    border-bottom: 0;
    border-top: .3em solid;
    border-right: .3em solid transparent;
    border-left: .3em solid transparent;
}

.card-link[aria-expanded="true"]::after {
    content: "";
    border-top: 0;
    border-bottom: .3em solid;
}