<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Image Carousel</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            background-color: #f0f2f5;
        }
        .carousel {
            max-width: 800px;
            margin: 50px auto;
            position: relative;
            overflow: hidden;
            border-radius: 8px;
        }
        .carousel img {
            width: 100%;
            display: block;
            transition: opacity 0.5s ease-in-out;
        }
        .carousel .prev, .carousel .next {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background-color: rgba(0, 0, 0, 0.5);
            color: white;
            border: none;
            padding: 10px;
            cursor: pointer;
            font-size: 2em;
            z-index: 1;
        }
        .carousel .prev {
            left: 10px;
        }
        .carousel .next {
            right: 10px;
        }
    </style>
</head>
<body>
    <div class="carousel">
        <img src="https://via.placeholder.com/800x400?text=Image+1" alt="Image 1">
        <img src="https://via.placeholder.com/800x400?text=Image+2" alt="Image 2" style="display: none;">
        <img src="https://via.placeholder.com/800x400?text=Image+3" alt="Image 3" style="display: none;">
        <button class="prev" onclick="prevSlide()">❮</button>
        <button class="next" onclick="nextSlide()">❯</button>
    </div>

    <script>
        let index = 0;
        const slides = document.querySelectorAll('.carousel img');
        const totalSlides = slides.length;

        function showSlide(n) {
            slides.forEach((slide, i) => {
                slide.style.display = (i === n) ? 'block' : 'none';
            });
        }

        function nextSlide() {
            index = (index + 1) % totalSlides;
            showSlide(index);
        }

        function prevSlide() {
            index = (index - 1 + totalSlides) % totalSlides;
            showSlide(index);
        }

        showSlide(index);
    </script>
</body>
</html>