body {
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: 0 auto;
    text-align: center;
}

.banner {
    width: 60%;
    height: auto;
}

.menu {
    margin-top: 20px;
}

.menu-item {
    display: inline-block;
    margin: 0 10px;
    padding: 10px 20px;
    background-color: #d32f2f;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.menu-item:hover {
    background-color: #b71c1c;
}

.menu-item.active {
    background-color: #b71c1c;
}

.content {
    margin-top: 20px;
}

.content-item {
    display: none;
    padding: 20px;
    background-color: #f8f8f8;
    border-radius: 5px;
}

:target {
    display: block;
}