html,body{margin:0}.hero{min-height:640px;padding:24px}.hero-d{color:#1d4ed8;background:#fff}.hero-d h1{font-size:48px}.below{margin-top:1600px;min-height:800px}.below-d{border:12px solid #1d4ed8}.unused-d{display:grid;grid-template-columns:repeat(12,1fr)}