bootstrap 4 image thumbnail fixed size code example
Example 1: image responsive bootstrap 4
<img class="img-fluid" src="" alt=""> //This will make your image responsive
Example 2: bootstrap profile picture
<img src="..." alt="..." class="img-thumbnail">
Example 3: bootstrap image size
.top1 {
height:390px;
background-color:#FFFFFF;
margin-top:10px;
overflow: hidden;
}
.top1 img {
height:100%;
}