Element button pseudo-element :before generated with padding 20px background font-size 16px border-radius transform margin 0px z-index auto box-shadow 1px 1px 1px rgba(0,0,0,0.3) box-sizing content-box overflow hidden cursor default text-shadow 1px 1px 1px rgba(0,0,0,0.2) float none transition border 60px rgba(0,0,0,1) solid line-height 1 font-weight normal display block height auto position static width 160px