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