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