@media only screen and (min-width: 768px) {
    .blocks-block.--left .--vertical {grid-column: 1/6;}
    .blocks-block.--left .--horizontal {grid-column: 1/-3;}

    .blocks-block.--center .--vertical {grid-column: 4/-4;}
    .blocks-block.--center .--horizontal {grid-column: 2/-2;}

    .blocks-block.--right .--vertical {grid-column: -6/-1;}
    .blocks-block.--right .--horizontal {grid-column: 3/-1;}
}