Element block pseudo-element :before generated with transition padding 20px box-sizing content-box box-shadow 1px 1px 1px rgba(0,0,0,0.3) display block cursor default z-index auto transform font-size 16px position static float none height auto overflow hidden border 0px rgba(0,0,0,1) solid line-height 1 border-radius font-weight normal background width 160px margin 0px text-shadow 1px 1px 1px rgba(0,0,0,0.2)