/* For desktop: */
.col-1 {max-width: 8.33%;}
.col-2 {max-width: 16.66%;}
.col-3 {max-width: 25%;}
.col-4 {max-width: 33.33%;}
.col-5 {max-width: 41.66%;}
.col-6 {max-width: 50%;}
.col-7 {max-width: 58.33%;}
.col-8 {max-width: 66.66%;}
.col-9 {max-width: 75%;}
.col-10 {max-width: 83.33%;}
.col-11 {max-width: 91.66%;}
.col-12 {max-width: 100%;}

@media only screen and (max-width: 768px) {
    [class*="col-"] {
        display: block;
        max-width: 100%;
    }
}