body { font-family: system-ui, sans-serif; margin: 0; min-height: 100vh; display: grid; place-items: center; background: #f4f7f6; color: #132a24; }
main { width: min(36rem, calc(100% - 2rem)); background: white; border-radius: 1rem; padding: 2rem; box-shadow: 0 1rem 3rem #173f3220; }
a { display: inline-block; padding: .8rem 1rem; color: white; background: #176b52; border-radius: .6rem; font-weight: 700; }