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