body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: #007bff;
    margin-top: 20px;
    margin-bottom: 20px;
}

label {
    display: block;
    margin: 10px 0 5px;
}

input, button {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    background-color: #007bff;
    color: white;
    font-weight: bold;
    border: none;
    cursor: pointer;
    margin-top: 15px;
}

button:hover {
    background-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.error {
    background-color: #f8d7da;
    color: #721c24;
    padding: 10px;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    margin-bottom: 10px;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

div, ul {
    margin-top: 20px;
    margin-bottom: 20px;
}

ul {
    padding-left: 20px;
}

@media (max-width: 768px) {
    .container {
        margin: 20px;
        padding: 15px;
    }

    button {
        padding: 12px;
    }
}