Answers for "bootstrap img responsive class"

responsive image in bootstrap

<img src="..." class="img-responsive">

image responsive bootstrap 4

<img class="img-fluid" src="" alt=""> //This will make your image responsive

image container bootstrap

<!-- FULL-WIDTH IMAGE --> 
<div class="container-fluid">
  <div class="row">
    <div class="col-12 px-0">
      <img class="img-fluid" src="your-image">
    </div>
  </div>  
</div>

<!-- 12 COLUMN IMAGE --> 
<div class="container-fluid">
  <div class="row">
    <div class="col-12">
      <img class="img-fluid" src="your-image">
    </div>
  </div>  
</div>

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">

bootstrap 4 image thumbnail class

<img src=".." class="img-thumbnail" />

bootstrap image size

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

.top1 img {
    height:100%;
}