body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

header {
    background-color: #1e2329;
    padding: 1rem;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: space-around;
}

nav ul li a {
    color: #ffffff;
    text-decoration: none;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    color: #1e2329;
}

.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

article {
    background-color: #ffffff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 1rem;
}

article img {
    width: 100%;
    height: auto;
    border-radius: 5px;
}

article h2 {
    margin-top: 1rem;
}

article h2 a {
    color: #1e2329;
    text-decoration: none;
}

.article-detail img {
    width: 100%;
    height: auto;
    border-radius: 5px;
    margin-bottom: 1rem;
}

footer {
    background-color: #1e2329;
    color: #ffffff;
    text-align: center;
    padding: 1rem;
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
    }

    nav ul li {
        margin-bottom: 0.5rem;
    }
}