.row{
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}
[class*="col-"]{
    padding: 0 15px;
}

.col-1 {width:8.33%;}

.col-2 {width:16.66%;}

.col-3 {width:25%;}

.col-4 {width:33.33%;}

.col-5 {width:41.66%;}

.col-6 {width:50%;}

.col-7 {width:58.33%;}

.col-8 {width:66.66%;}

.col-9 {width:75%;}

.col-10 {width:83.33%;}

.col-11 {width:91.66%;}

.col-12 {width:100%;}