body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 15px 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 1.8em;
}

header hr {
    border: 1px solid #ecf0f1;
    margin: 10px 0;
}

nav {
    margin-top: 10px;
}

.nav-link {
    color: #ecf0f1;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #2c3e50;
}

main {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.site-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.site-item {
    padding: 10px;
    border-left: 5px solid #2c3e50;
    background-color: #f9f9f9;
    border-radius: 5px;
}

.site-item h2 {
    margin: 0;
    font-size: 1.5em;
}

.site-item p {
    margin: 10px 0 0;
}

.site-item a {
    text-decoration: none;
    color: #2c3e50;
}


@media (max-width: 600px) {
    main {
        margin: 10px;
        padding: 15px;
    }

    .site-item {
        padding: 8px;
    }

    header h1 {
        font-size: 1.5em;
    }
}