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