body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f5;
    color: #333;
}

header {
    background-color: #3b5998;
    color: white;
    padding: 1em;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    animation: slideDown 0.8s ease-out;
}

nav a {
    color: white;
    margin: 0 1em;
    text-decoration: none;
    font-weight: bold;
}

main {
    padding: 2em;
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    animation: fadeIn 1s ease-in-out;
}

h2 {
    color: #3b5998;
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    background-color: #dfe3ee;
    margin: 0.5em 0;
    padding: 1em;
    border-radius: 4px;
    transition: background-color 0.3s, transform 0.3s;
}

ul li:hover {
    background-color: #c9d0e4;
    transform: scale(1.03);
}

.download-button {
    display: inline-block;
    padding: 0.5em 1em;
    background-color: #3b5998;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s, transform 0.3s;
    margin: 0.5em 0;
}

.download-button:hover {
    background-color: #2d4373;
    transform: translateY(-2px);
}

img {
    max-width: 100%;
    border-radius: 8px;
    margin: 1em 0;
    animation: fadeIn 1.5s ease-in-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
.tag {
    display: inline-block;
    padding: 0.2em 0.5em;
    margin-right: 0.5em;
    background-color: #3b5998;
    color: white;
    border-radius: 3px;
    font-size: 0.9em;
}