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