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