page.css
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html, body, h1, h2, h3, h4, h5, h6, p { margin: 0; padding: 0; } html { font-family: sans-serif; } body { display: flex; flex-direction: column; min-height: 100vh; } body > header { flex: 0 0 auto; } body > header > h1 { padding: 1rem; } body > main { flex: 1; width: 1280px; margin: 0 auto; }