auto img bootstrap code example

Example 1: img class bootstrap

<!-- Circuler Image -->
 <img src="cinqueterre.jpg" class="img-circle" alt="Cinque Terre"> 
 
<!-- Image With some border-raduis property  -->
 <img src="cinqueterre.jpg" class="img-rounded" alt="Cinque Terre"> 
 
<!-- Image like thumbnail  -->
 <img src="cinqueterre.jpg" class="img-thumbnail" alt="Cinque Terre">

Example 2: bootstrap image size

.top1 {
    height:390px;
    background-color:#FFFFFF;
    margin-top:10px;
    overflow: hidden;
}

.top1 img {
    height:100%;
}