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