Sass mixins

mixins.scss

@mixin prefixr($que, $arguments) {
    #{$que}: $arguments;
    -webkit-#{$que}: $arguments;
    -ms-#{$que}: $arguments;
    -moz-#{$que}: $arguments;
    -o-#{$que}: $arguments;
}

@mixin transition($time) {
    @include prefixr(transition, all $time linear);
}

@mixin box-sizing($com) {
    &, &:before, &:after {
        @include prefixr(box-sizing, $com);
    }
}