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