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