Some helper Sass mixins.

mixins.scss

// Some helper Sass mixins

@mixin clear() {
    &:before, &:after {
        content: "";
        display: block;
        width: 100%;
        height: 0;
        overflow: hidden;
    }
    &:after {
        clear: both;
    }
}

@mixin hideText() {
  font: 0/0 a;                                                                
  text-decoration: none;
  color: transparent;
  text-shadow: none;
}

@mixin vendorize($property, $value) {
    -webkit-#{$property}: $value;
    -moz-#{$property}: $value;
    -ms-#{$property}: $value;
    -o-#{$property}: $value;
    #{$property}: $value;
}

@mixin hoverActiveFocus($property, $value) {
    &:hover, &:active, &:focus, &:visited {
        #{$property}: $value;
    }
}