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