how to make two columns in bootstrap 4 code example

Example 1: .col-6 bootstrap

.col-6{
	flex: 0 0 50%;
	max-width: 50%;
}

Example 2: col-md-6 bootstrap

<div class="col-lg-2 col-md-4 col-sm-3 "> Your Stuffs </div>

/*
col-lg  for large

col-md for med 

col-sm for small 

enjoy :) 
*/

Example 3: .row bootstrap

.row{
    display: flex;
    flex-wrap: wrap;
	margin-right: -15px;
    margin-left: -15px;
}