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