* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background: #eef3f8;
}

.contenedor {
    width: 90%;
    max-width: 700px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.10);
}

h1 {
    margin-bottom: 10px;
}

h2 {
    font-size: 20px;
    margin-bottom: 30px;
}

.conexion {
    margin-bottom: 20px;
    padding: 15px;
    background: #e8f7ec;
    border-radius: 8px;
}