Element block pseudo-class :active generated with background box-sizing content-box cursor default padding 20px font-weight normal height auto position static width 160px box-shadow 1px 1px 1px rgba(0,0,0,0.3) margin 0px font-size 16px display block border-radius float none transform transition line-height 1 z-index auto border 4px rgba(0,0,0,1) solid text-shadow 1px 1px 1px rgba(0,0,0,0.2) overflow hidden