Element block pseudo-class :active generated with display block padding 20px box-shadow 0px 0px 5px rgba(0,0,0,0.3) position static margin auto font-size 16px background font-weight normal text-shadow 1px 1px 1px rgba(0,0,0,0.2) border 0px rgba(0,0,0,1) solid line-height 1 float none transition cursor default width 50% z-index auto height auto transform overflow hidden box-sizing content-box border-radius