$border: (
    bt: border-top,
    br: border-right,
    bb: border-bottom,
    bl: border-left,
);

@each $abbr, $dec in $border {
    @include bp-suffix(ons-u-#{$abbr}, $create-between-breakpoints: true) {
        #{$dec}: 1px solid var(--ons-color-borders) !important;
    }
}