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