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