fade animate

https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_slideshow

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>

  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
    </style>
  </head>

  <body>

    <div class="slideshow-container">

      <div class="mySlides fade">
        <div class="numbertext">1 / 3</div>
        <img src="https://www.w3schools.com/howto/img_nature_wide.jpg" style="width:100%">
        <div class="text">Caption Text</div>
      </div>

      <div class="mySlides fade">
        <div class="numbertext">2 / 3</div>
        <img src="https://www.w3schools.com/howto/img_snow_wide.jpg" style="width:100%">
        <div class="text">Caption Two</div>
      </div>

      <div class="mySlides fade">
        <div class="numbertext">3 / 3</div>
        <img src="https://www.w3schools.com/howto/img_mountains_wide.jpg" style="width:100%">
        <div class="text">Caption Three</div>
      </div>

      <a class="prev slideme" data-point="-1">&#10094;</a>
      <a class="next slideme" data-point="1">&#10095;</a>

    </div>
    <br>

    <div style="text-align:center">
      <span class="dot slideme" data-point="1"></span>
      <span class="dot slideme" data-point="2"></span>
      <span class="dot slideme" data-point="3"></span>
    </div>

    <script>
    </script>

  </body>

</html>

CSS

* {
        box-sizing: border-box
      }

      body {
        font-family: Verdana, sans-serif;
        margin: 0
      }

      .mySlides {
        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;
      }

      /* Position the "next button" to the right */

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

      /* On hover, add a black background color with a little bit see-through */

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

      /* Caption text */

      .text {
        color: #f2f2f2;
        font-size: 15px;
        padding: 8px 12px;
        position: absolute;
        bottom: 8px;
        width: 100%;
        text-align: center;
      }

      /* Number text (1/3 etc) */

      .numbertext {
        color: #f2f2f2;
        font-size: 12px;
        padding: 8px 12px;
        position: absolute;
        top: 0;
      }

      /* The dots/bullets/indicators */

      .dot {
        cursor: pointer;
        height: 15px;
        width: 15px;
        margin: 0 2px;
        background-color: #bbb;
        border-radius: 50%;
        display: inline-block;
        transition: background-color 0.6s ease;
      }

      .active,
      .dot:hover {
        background-color: #717171;
      }

      /* Fading animation 

      .fade {
        -webkit-animation-name: fade;
        -webkit-animation-duration: 1.5s;
        animation-name: fade;
        animation-duration:...

JavaScript

$(document).ready(function(){
     
      
      function showSlides(n) {
      
        var i;
        var slides = document.getElementsByClassName("mySlides");
        var dots = document.getElementsByClassName("dot");
        if (n > slides.length) {
          slideIndex = 1
        }
        if (n < 1) {
          slideIndex = slides.length
        }
        for (i = 0; i < slides.length; i++) {
            $(slides[i]).hide();
        }
        for (i = 0; i < dots.length; i++) {
          dots[i].className = dots[i].className.replace(" active", "");
        }
          $(slides[slideIndex - 1]).fadeIn();
        dots[slideIndex - 1].className += " active";

      }
      
      });