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