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