* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', sans-serif; }



nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 2rem 10%; background: #fff; border-bottom: 1px solid #eee;
}

nav ul { display: flex; list-style: none; }
nav ul li { margin-left: 20px; }
nav ul li a { text-decoration: none; color: #555; font-weight: 500; transition: 0.3s; }
nav ul li a:hover { color: #000; }

.hero { text-align: center; padding: 10px 20px; background: #fff; }
.hero h1 { font-size: 3rem; margin-bottom: 5px; letter-spacing: -1px; }

.servicios {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px; padding: 50px 10%;
}

.card { background: #fff; padding: 20px; border-radius: 8px; text-align: center; transition: transform 0.3s; }
.card:hover { transform: translateY(-5px); }
.card img { width: 100%; height: 300px; object-fit: cover; border-radius: 5px; margin-bottom: 15px; }

.form-container { max-width: 600px; margin: 50px auto; padding: 20px; background: #fff; border-radius: 8px; }
form input, form textarea, form select {
    width: 100%; padding: 12px; margin-bottom: 15px; border: 1px solid #ddd; border-radius: 4px;
}
button {
    background: #000; color: #fff; border: none; padding: 12px 25px; cursor: pointer; width: 100%; border-radius: 4px;
}
button:hover { background: #333; }

body {
            
            /* El truco es usar un gris muy oscuro que se funde a negro total */
            background: radial-gradient(circle at center, #1a1a1a 0%, #000000 100%);
            height: 100vh;
            
            
        }

	<style>
  body {
    background-color: lightblue; /* Puedes usar nombres, HEX (#RRGGBB) o RGB */
  }
</style>