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