* {
    margin: 0;
    padding: 0;
    font-family: Arial;
}

.top-header {
    background: #333;
    padding: 10px;
}

.top-links {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

.top-links a {
    color: white;
    text-decoration: none;
}

.nav {
    background: #4CAF50;
    padding: 10px;
    display: flex;
    gap: 20px;
}

.nav a {
    color: white;
    text-decoration: none;
}

.header {
    display: flex;
    padding: 10px;
    background: #ddd;
}

.logo img {
    width: 100px;
}

.banner img {
    width: 320%;
    height: 150px;
    object-fit: cover;
}

.main {
    display: flex;
}

.sidebar {
    width: 25%;
    background: #f4f4f4;
    padding: 15px;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    margin: 10px 0;
}

.content {
    width: 75%;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    padding: 15px;
}

.item {
    width: calc(33.33% - 10px);
    border: 1px solid #ccc;
    padding: 10px;
    text-align: center;
}

.item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 15px;
}