html - How do I change the background-color of an accordion tab in Bootstrap? -

i trying change background color of tabs on accordion. when change background color in css, changes color behind text , not entire thing.

here segment of code:

<div class="panel-group" id="accordion">     <div class="panel panel-default">         <div class="panel-heading">         <h4 class="panel-title">             <a data-toggle="collapse" data-parent="#accordion" href="#collapseone">       collapsible group item #1             </a>         </h4>         </div>         <div id="collapseone" class="panel-collapse collapse in">         <div class="panel-body">             anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. food truck quinoa nesciunt laborum eiusmod. brunch 3 wolf moon tempor, sunt aliqua put bird on squid single-origin coffee nulla assumenda shoreditch et. nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. ad vegan excepteur butcher vice lomo. leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt haven't heard of them accusamus labore sustainable vhs.     </div>     </div> </div> 

you changing background-color of anchor tag if text's background changing, instead, use following css selector change background-color of panel-heading:

.panel-default > .panel-heading {     background-color:#000; }