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