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