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