/**
 * Drop shadow raised
 *
 * @thanks Nicolas Gallagher @necolas
 * @link http://nicolasgallagher.com/css-drop-shadows-without-images/demo/
 */
@mixin drop-shadow-raised($height: 10px, $color: #000)
{
    @include box-shadow(
        0 $height*1.5 $height #{-$height} rgba($color, .5),
        0 $height/10 $height*.4 rgba($color, .3)
    );
}