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