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