html - Bootstrap 4: Can't Change Card Header Properties -


in style.css, have set

.card-header {   background-color: transparent;    border-color: transparent; }

and changed

<div class="card-header" style="background-color: transparent; border-color: transparent;">     <div class="card-title">about</div> </div>

to

<div class="card-header">     <div class="card-title">about</div> </div>

but still outputs

card-header

what preventing changing? know style.css placed because can change other properties such 

.card-text { padding: 2% 2% 2% 2%; }

and changes go effect.

found answer. edit .card-header, 

.card .card-header {   background-color: transparent;    border-color: transparent; }

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