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