@mixin media($size) {
@media screen and (max-width: $size) {
@content;
}
@function calculate-rem($px, $base: $base-font-size) {
$rem: $px / $base;
@return #{$rem}rem;
@mixin font-size($px) {
font-size: $px + px;
font-size: calculate-rem($px);