@media (max-width:991px){
    .wp-block-columns
    {
        display: block !important;
        width: 100%;
        margin: 0 auto !important;
    }
    .wp-block-columns .wp-block-column {
        flex: none !important;
        width: 100%;
        margin: 0 !important;
        /*match bootstrap*/
        padding-left:15px;
        padding-right:15px;
    }
}
@media (min-width:992px){
    .wp-block-columns .wp-block-column.flex-weight-1{
        flex: 1;
        width:auto;
    }
    .wp-block-columns .wp-block-column.flex-weight-2{
        flex: 2;
        width:auto;
    }
    .wp-block-columns .wp-block-column.flex-weight-3{
        flex: 3;
        width:auto;
    }  
}