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