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