body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #0a192f;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #112240;
    padding: 10px 20px;
    z-index: 1;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left, .nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-left a, .nav-right a {
    color: #ffffff;
    font-family: "Times New Roman", sans-serif;
    text-decoration: none;
    font-size: 20px;
    padding: 5px 15px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.nav-left a:hover, .nav-right a:hover {
    background-color: yellow;
    color: #000000;
}

.home-icon {
    font-weight: bold;
}

main {
    flex: 1;
    padding: 20px;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

footer {
    background-color: #112240;
    padding: 10px 20px;
    text-align: center;
    z-index: 1;
}

.footer-container {
    color: #ffffff;
    font-size: 14px;
}

.image-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding-left: 20px;
}

.image-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.image-item img {
    width: 500px;
    height: auto;
    margin-right: 20px;
}

.description {
    max-width: 300px;
    font-size: 18px;
    line-height: 1.5;
    color: #ffffff;
    margin-left: 20px;
}

.download-link {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 15px;
    background-color: #112240;
    color: #ffffff;
    text-decoration: none;
    border-radius: 5px;
    font-size: 14px;
}

.download-link:hover {
    background-color: #1c3a5e;
}

.download-link i {
    margin-right: 8px;
}

@media (max-width: 768px) {
    main {
        padding: 10px;
    }

    .image-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .image-item img {
        width: 100%;
        max-width: 500px;
        margin-right: 0;
        margin-bottom: 10px;
    }

    .description {
        font-size: 16px;
        max-width: 100%;
        margin-left: 0;
        text-align: left;
    }

    .nav-container {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-left, .nav-right {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .nav-right {
        margin-top: 10px;
    }
}