make boostrap grid code example

Example 1: boot strap columns

  

    

      1 of 3
    
    

      2 of 3 (wider)
    
    

      3 of 3
    
  
  

    

      1 of 3
    
    

      2 of 3 (wider)
    
    

      3 of 3
    
  

Example 2: .row bootstrap

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