reduce gap between columns bootstrap code example

Example 1: bootstrap col no gaps

<div class="row no-gutters">
</div>

Example 2: Remove space between columns in Bootstrap 4

<div class="row">
   <div class="col-md-2 padding-0">
       //stuff here for this column
   </div>
   <div class="col-md-10 padding-0">
       //stuff here for columns
   </div>
</div>