@mixin _position($position, $args) {
@each $dir in top, left, bottom, right { $i: index($args, $dir); @if $i { #{$dir}: nth($args, $i + 1); } } position: $position;
}
@mixin absolute($args) {
@include _position(absolute, $args);
} @mixin relative($args) {
@include _position(relative, $args);
} @mixin fixed($args) {
@include _position(fixed, $args);
}
@mixin sizing($args, $prefix: “”) {
$width: if(length($args) == 2, nth($args, 1), $args); $height: if(length($args) == 2, nth($args, 2), $args); #{$prefix}width: $width; #{$prefix}height: $height;
}
@mixin min-sizing($args) {
@include sizing($args, "min-");
}
@mixin max-sizing($args) {
@include sizing($args, "max-");
}
@mixin circle($args) {
@include sizing($args); border-radius: 50%;
}