form#GETTYSBURG-ADDRESS{max-width:80ch;margin:0 auto;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:.3rem}form#GETTYSBURG-ADDRESS button{font-size:1.2rem;transition:1.2s background-position;background:linear-gradient(to right, #d5d5d5 50%, rgba(0, 0, 0, 0) 0%) 0 0/200% 100% no-repeat;border:1px solid #ccc;border-radius:.2rem;padding:.5rem;flex-grow:1}form#GETTYSBURG-ADDRESS button.active{background-position:-100% 0}