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