@bs: ~"only screen and (max-width: 640px)";
@bm: ~"only screen and (max-width: 768px)";
@bl: ~"only screen and (max-width: 960px)";
@bxl: ~"only screen and (max-width: 1200px)";
@s: ~"only screen and (min-width: 641px)";
@m: ~"only screen and (min-width: 769px)";
@l: ~"only screen and (min-width: 961px)";
@xl: ~"only screen and (min-width: 1201px)";
@media @bs {
}