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