Using @extend
in CSS preprocessors really suck… so use mixins instead. Consider this example:
%antialias {
text-rendering: optimizeLegibility !important;
-webkit-font-smoothing: antialiased !important;
-moz-osx-font-smoothing: grayscale;
}
Seems innocent enough:
h3 {
@extend %antialias;
}
Until you try it with media queries:
@media (max-width: 300px) {
h3 {
@extend %antialias;
}
}
…then it won’t work. Use mixins instead.