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