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