$mobile-size-up: 599px;
$small-tablet-size-down: 600px;
$small-tablet-size-up: 719px;
$large-tablet-size-down: 720px;
$large-tablet-size-up: 959px;
$desktop-size-down: 960px;
$desktop-size-up: 1279px;
$medium-desktop-size-down: 1280px;
$medium-desktop-size-up: 1439px;
$large-desktop-size-down: 1440px;