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