/*Begin mobile.*/
@media screen and (max-width: 639px) {

    
    
    .tablet {
        display: none;
    }
    
    .desktop {
        display: none;
    }
    
    
        /* Hide the left column container on mobile */
        .column-left-container {
              display: none; 
        }
    
        /* Adjust width of center column to take full width */
        main div .center {
            width: 100%;  /* Make center column full width */
           
        
        }
        
        main {
            box-shadow: 0.5em 0.5em 0.5em black;
            padding-bottom: 75%;
            
        }
    
        
          
    
    }
    /*End mobile.*/