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