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