Element button pseudo-element :before generated with transition border 0px rgba(0,0,0,1) solid transform float none position static cursor default line-height 1 overflow hidden background padding 20px outline none width 160px opacity 1 border-radius text-shadow box-shadow 1px 1px 6px rgba(0,0,0,1) z-index auto display block margin 0px font-weight normal font-size 16px height auto box-sizing content-box