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