.vt-multicolumn.off-center-2-columns .col-sm-6:first-child{
    width: 75%; 
}

.vt-multicolumn.off-center-2-columns .col-sm-6:nth-child(2){
    width: 25%;
} 

.vt-multicolumn.standard-2-columns .col-sm-6:first-child{
    width: 50%; 
}

.vt-multicolumn.standard-2-columns .col-sm-6:nth-child(2){
    width: 50%;
}