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