col-sm-12 class code example
Example 1: col-md bootstrap 4
.col-xs-12 col-md-8
.col-xs-6 .col-md-4
.col-xs-6 .col-md-4
.col-xs-6 .col-md-4
.col-xs-6 .col-md-4
.col-xs-6
.col-xs-6
Example 2: col-md-6 bootstrap
Your Stuffs
/*
col-lg for large
col-md for med
col-sm for small
enjoy :)
*/