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