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