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