bootstrap nested columns code example
Example 1: Bootstrap 4 Grid
<!-- Control the column width, and how they should appear on different devices -->
<div class="row">
<div class="col-*-*"></div>
<div class="col-*-*"></div>
</div>
<div class="row">
<div class="col-*-*"></div>
<div class="col-*-*"></div>
<div class="col-*-*"></div>
</div>
<!-- Or let Bootstrap automatically handle the layout -->
<div class="row">
<div class="col"></div>
<div class="col"></div>
<div class="col"></div>
</div>
Example 2: .col-12 bootstrap
.col-12{
flex: 0 0 100%;
max-width: 100%;
}
Example 3: nested columsn inside bootstrap
<div class="container-fluid">
<div class="col-lg-12">
<div class="row">
<div class="col-sm-6">
<div class="well">
<p>First Part</p>
</div>
</div>
<div class="col-sm-6">
<div class="well">
<p>Second Part</p>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-6">
<div class="well">
<div class="row">
<div class="col-md-6">
<div class="well">
<p>Nested 1</p>
</div>
</div>
<div class="col-md-6">
<div class="well">
<p>Nested 2</p>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="well">
<p>Nested 3</p>
</div>
</div>
<div class="col-md-6">
<div class="well">
<p>Nested 4</p>
</div>
</div>
</div>
</div>
</div>
<div class="col-sm-6">
<div class="well">
<p>Fourth Part[enter image description here][1]</p>
</div>
</div>
</div>
</div>
</div>