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