body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    color: #333;
}

form {
    margin-bottom: 20px;
}

input[type="text"], input[type="password"] {
    padding: 10px;
    width: 100%;
    margin-bottom: 10px;
}

button {
    padding: 10px 20px;
    background-color: #5cb85c;
    color: #fff;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #4cae4c;
}

.error {
    color: red;
}

.product {
    border: 1px solid #ddd;
    padding: 15px;
    margin: 10px 0;
    background-color: #fff;
}

.product h3 {
    margin: 0;
    color: #333;
}

.product p {
    margin: 5px 0;
}

.btn {
    padding: 10px 20px;
    background-color: #d9534f;
    color: #fff;
    text-decoration: none;
}

.btn:hover {
    background-color: #c9302c;
}