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