This might help you
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {box-sizing: border-box}
.mySlides1, .mySlides2 {display: none}
img {vertical-align: middle;}
/* Slideshow container */
.slideshow-container {
max-width: 1000px;
position: relative;
margin: auto;
}
/* Next & previous buttons */
.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;
}
/* Position the "next button" to the right */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
/* On hover, add a grey background color */
.prev:hover, .next:hover {
background-color: #f1f1f1;
color: black;
}
</style>
</head>
<body>
<h2 style="text-align:center">Multiple Slideshows</h2>
<p>Slideshow 1:</p>
<div class="slideshow-container">
<div class="mySlides1">
<img src="https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fd2v9y0dukr6mq2.cloudfront.net%2Fvideo%2Fthumbnail%2FhHeEEOX%2Flovatnet-lake-beautiful-nature-norway_bpxjbou08l_thumbnail-full01.png&f=1&nofb=1" style="width:100%">
</div>
<div class="mySlides1">
<img src="https://external-content.duckduckgo.com/iu/?u=http%3A%2F%2Fthewowstyle.com%2Fwp-content%2Fuploads%2F2015%2F01%2Fnature-images..jpg&f=1&nofb=1" style="width:100%">
</div>
<div class="mySlides1">
<img src="https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fimages.hdqwalls.com%2Fdownload%2Fbest-nature-image-2560x1440.jpg&f=1&nofb=1" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 0)">❮</a>
<a class="next" onclick="plusSlides(1, 0)">❯</a>
</div>
<p>Slideshow 2:</p>
<div class="slideshow-container">
<div class="mySlides2">
<img src="https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fcroatia.hr%2Fsites%2Fdefault%2Ffiles%2Fstyles%2Fimage_full_width%2Fpublic%2F2017-08%2F02_01_slide_nature.jpg%3Fitok%3DItAHmLlp&f=1&nofb=1" style="width:100%">
</div>
<div class="mySlides2">
<img src="https://external-content.duckduckgo.com/iu/?u=http%3A%2F%2Fthewowstyle.com%2Fwp-content%2Fuploads%2F2015%2F01%2FFree-Wallpaper-Nature-Scenes.jpg&f=1&nofb=1" style="width:100%">
</div>
<div class="mySlides2">
<img src="https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fwww.superiorwallpapers.com%2Fdownload%2Fsummer-sunny-day-and-wonderful-waterfall-in-the-nature-4550x2559.jpg&f=1&nofb=1" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<p>Slideshow 3:</p>
<div class="slideshow-container">
<div class="mySlides3">
<img src="https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fwww.pixelstalk.net%2Fwp-content%2Fuploads%2F2016%2F09%2FBest-Desktop-Backgrounds-Nature.jpg&f=1&nofb=1" style="width:100%">
</div>
<div class="mySlides3">
<img src="https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fwallup.net%2Fwp-content%2Fuploads%2F2016%2F01%2F132930-nature-landscape-flowers.jpg&f=1&nofb=1" style="width:100%">
</div>
<div class="mySlides3">
<img src="https://external-content.duckduckgo.com/iu/?u=http%3A%2F%2Fwww.pixelstalk.net%2Fwp-content%2Fuploads%2F2016%2F08%2FWonderful-Nature-Colorful-Scene-HD.jpg&f=1&nofb=1" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 2)">❮</a>
<a class="next" onclick="plusSlides(1, 2)">❯</a>
</div>
<script>
var slideIndex = [1,1,1];
var slideId = ["mySlides1", "mySlides2", "mySlides3"]
showSlides(1, 0);
showSlides(1, 1);
showSlides(1, 2);
function plusSlides(n, no) {
showSlides(slideIndex[no] += n, no);
}
function showSlides(n, no) {
var i;
var x = document.getElementsByClassName(slideId[no]);
if (n > x.length) {slideIndex[no] = 1}
if (n < 1) {slideIndex[no] = x.length}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
x[slideIndex[no]-1].style.display = "block";
}
</script>
</body>
</html>
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
