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