body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.contenedor {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    width: 400px;
    text-align: center;
}

h1 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 25px;
    color: #4facfe;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
}

h1 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 25px;
    color: #fff;
    background: #4facfe;
    padding: 10px;
    border-radius: 8px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}

h2 {
    margin-bottom: 20px;
    color: #333;
}

input, select, button {
    width: 90%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 10px;
    border: 1px solid #ddd;
    font-size: 15px;
}

button {
    background: #4facfe;
    color: white;
    font-weight: bold;
    border: none;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: #00c6ff;
}