Add classes to an element to remove all borders or some borders.
<style type="text/css">
.box{
width:100px;
height:80px;
background:#EEE;
margin:5px;
float:left;
border:1px solid #000;
}
</style>
<span class="box border"></span>
<span class="box border-0"></span>
<span class="box border-top-0"></span>
<span class="box border-right-0"></span>
<span class="box border-bottom-0"></span>
<span class="box border-left-0"></span>
<style type="text/css">
.box{
width:100px;
height:80px;
background:#EEE;
margin:5px;
float:left;
}
</style>
<span class="box border border-primary"></span>
<span class="box border border-success"></span>
<span class="box border border-info"></span>
<span class="box border border-secondary"></span>
<span class="box border border-danger"></span>
<span class="box border border-warning"></span>
<span class="box border border-light"></span>
<span class="box border border-dark"></span>
<span class="box border border-white"></span>
<style type="text/css">
.box{
width:100px;
height:80px;
margin:5px;
float:left;
}
</style>
<img src="../images/content/images-3.jpg" alt="Image Border" class="box rounded">
<img src="../images/content/images-3.jpg" alt="Image Border" class="box rounded-top">
<img src="../images/content/images-3.jpg" alt="Image Border" class="box rounded-right">
<img src="../images/content/images-3.jpg" alt="Image Border" class="box rounded-bottom">
<img src="../images/content/images-3.jpg" alt="Image Border" class="box rounded-left">
<img src="../images/content/images-3.jpg" alt="Image Border" class="box rounded-circle">
<img src="../images/content/images-3.jpg" alt="Image Border" class="box rounded-0">