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