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