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