@media screen and (min-width: 640px) {
   .multicolumn-custom .grid--2-col-desktop .grid__item {
        width: calc(50% - var(--grid-desktop-horizontal-spacing) / 2);
        max-width: calc(50% - var(--grid-desktop-horizontal-spacing) / 2);
    }
}
@media screen and (max-width: 639px) {
   .multicolumn-custom .grid--1-col-tablet-down .grid__item {
        width: 100%;
        max-width: 100%;
    }
}