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