index-main/assets/css/base/_responsive.scss

$desktop: "screen and (min-width: 1200px)";
$medium: "screen and (max-width: 1080px)";
$medium-up: "screen and (min-width: 1080px)";

$small-up: "screen and (min-width: 768px)";
$small: "screen and (max-width: 768px)";
$x-small: "screen and (max-width: 560px)";
$paysage: "screen and (max-height: 670px) and (min-width: 1080px)";

@media #{$medium}{

}