<img src="..." class="img-fluid" alt="Responsive image">
<img class="img-fluid" src="" alt=""> //This will make your image responsive
<div class="text-center"> <img src="{{source}}"/> </div>
.top1 { height:390px; background-color:#FFFFFF; margin-top:10px; overflow: hidden; } .top1 img { height:100%; }