body {
    margin: 0;
    font-family: Arial, sans-serif;
}

header {
    background-color: #0a4d8c;
    color: white;
    padding: 20px;
}

nav {
    background-color: #6bbf24;
    padding: 10px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.container {
    display: flex;
}

aside {
    background-color: orange;
    width: 150px;
    padding: 10px;
}

.menu-item {
    background-color: gold;
    margin: 5px 0;
    padding: 8px;
    text-align: center;
}

main {
    flex: 1;
    padding: 15px;
}

main img {
    width: 250px;
    float: left;
    margin-right: 15px;
}

.sidebar {
    background-color: orange;
    width: 200px;
    padding: 10px;
}

.box {
    background-color: gold;
    padding: 10px;
    margin: 10px 0;
    text-align: center;
}

@media (max-width: 768px) {

    .container {
        flex-direction: column;
    }

    aside,
    .sidebar {
        width: auto;
    }

    main img {
        width: 100%;
        float: none;
        margin: 0 0 10px 0;
    }

    nav {
        flex-wrap: wrap;
    }
}