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

header {
    background-color: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

nav {
    background-color: #444;
    padding: 1rem;
    text-align: center;
}

nav a {
    color: #fff;
    text-decoration: none;
    padding: 1rem;
}

nav a:hover {
    background-color: #555;
}

main {
    padding: 0;
}

.container {
    padding: 1rem;
    max-width: 960px;
    margin: 0 auto;
}

.slider-container {
    width: 100%;
    overflow: hidden;
}

.slider {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.slider img {
    width: 33.333%;
    flex-shrink: 0;
}

.prev, .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -22px;
    color: white;
    font-weight: bold;
    font-size: 18px;
    transition: 0.6s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
    background-color: rgba(0,0,0,0.5);
}

.next {
    right: 0;
    border-radius: 3px 0 0 3px;
}

.prev:hover, .next:hover {
    background-color: rgba(0,0,0,0.8);
}

pre {
    background-color: #eee;
    padding: 1rem;
    border-radius: 5px;
    white-space: pre-wrap;
    text-align: left;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    width: 100%;
}