body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
    background-color: #f4f4f4;
}
header {
    background-color: #333;
    padding: 20px;
}
.logo {
    max-width: 200px;
}
.category {
    background: white;
    margin: 20px auto;
    padding: 20px;
    max-width: 600px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}
h2 {
    color: #333;
}
ul {
    list-style: none;
    padding: 0;
}
li {
    margin: 10px 0;
}
a {
    text-decoration: none;
    background-color: #007bff;
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    display: inline-block;
}
a:hover {
    background-color: #0056b3;
}
footer {
    background-color: #333;
    color: white;
    padding: 10px;
    margin-top: 20px;
}