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