@mixin overshoot($p, $t:normal, $c:$error_color) { // // overshoot // // $p: position // $t: type // $c: base color // // possible $p values: // top, bottom, right, left // // possible $t values: // normal, backdrop // // overshoot is very simplified in this theme background-color: gtkalpha($c, 0.1); background-size: 100%; background-repeat: no-repeat; border: none; box-shadow: none; }