body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    margin: 0;
    text-align: center;
}

header {
    background-color: #1f2a44;
    color: white;
    padding: 20px;
}

nav {
    margin: 20px;
}

nav a {
    background-color: #0077cc;
    color: white;
    padding: 10px 15px;
    text-decoration: none;
    border-radius: 5px;
}

form {
    background-color: white;
    width: 350px;
    margin: auto;
    padding: 20px;
    border-radius: 10px;
}

label {
    display: block;
    margin: 10px 0;
    text-align: left;
}

input {
    width: 100%;
    padding: 5px;
}

button {
    margin-top: 15px;
    padding: 10px;
    background-color: #28a745;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}

#mensajeError {
    color: red;
    font-weight: bold;
    margin-top: 10px;
}