body { font: 17px system-ui,sans-serif; margin: 0; background: #eef2f5; color: #142b36; } main { max-width: 42rem; margin: 3rem auto; padding: 2rem; background: white; border-radius: 1rem; } h1 { margin-top: 0; } label { display: block; margin-top: 1rem; } input { display: block; box-sizing: border-box; width: 100%; padding: .6rem; font: inherit; } button { margin-top: 1rem; padding: .65rem 1rem; font: inherit; cursor: pointer; } pre { white-space: pre-wrap; overflow-wrap: anywhere; } button:disabled { cursor: default; }