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