$zindex-sidebar: 1000;
$zindex-drawer: 1000;
$zindex-top-bar: 1005;
$zindex-close: 1015;
$zindex-popover: 1020;
$zindex-tooltip: 1030;
$zindex-top-bar-fixed: 1030;
$zindex-modal-background: 1040;
$zindex-modal: 1050;