Revision c67c8f34-2890-4c8b-b30a-72e1ba1be4fe

My requirement is to create a slider without using extension. So I have created a phtml file with the html code and script for slider and called this phtml file in a  cms page. But in the frontend the images are not showing though the script is working. 

[![enter image description here][1]][1]

Could anyone please help me?


Code:

    <!DOCTYPE html>
    <html>
    <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
    * {box-sizing: border-box;}
    body {font-family: Verdana, sans-serif;}
    .mySlides {display: none;}
    img {vertical-align: middle;}
    
    /* Slideshow container */
    .slideshow-container {
      max-width: 1000px;
      position: relative;
      margin: auto;
    }
    
    /* 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 {
      height: 15px;
      width: 15px;
      margin: 0 2px;
      background-color: #bbb;
      border-radius: 50%;
      display: inline-block;
      transition: background-color 0.6s ease;
    }
    
    .active {
      background-color: #717171;
    }
    
    /* Fading animation */
    .fade {
      -webkit-animation-name: fade;
      -webkit-animation-duration: 1.5s;
      animation-name: fade;
      animation-duration: 1.5s;
    }
    
    @-webkit-keyframes fade {
      from {opacity: .4} 
      to {opacity: 1}
    }
    
    @keyframes fade {
      from {opacity: .4} 
      to {opacity: 1}
    }
    
    /* On smaller screens, decrease text size */
    @media only screen and (max-width: 300px) {
      .text {font-size: 11px}
    }
    </style>
    </head>
    <body>
    
    <h2>Automatic Slideshow</h2>
    <p>Change image every 2 seconds:</p>
    
    <div class="slideshow-container">
    
    <div class="mySlides fade">
      <div class="numbertext">1 / 3</div>
      <img src="../image1.jpg" style="width:100%" alt="image1">
      <div class="text">Caption Text</div>
    </div>
    
    <div class="mySlides fade">
      <div class="numbertext">2 / 3</div>
      <img src="../image2.jpg" style="width:100%" alt="image2">
      <div class="text">Caption Two</div>
    </div>
    
    <div class="mySlides fade">
      <div class="numbertext">3 / 3</div>
      <img src="img_mountains_wide.jpg" style="width:100%">
      <div class="text">Caption Three</div>
    </div>
    
    </div>
    <br>
    
    <div style="text-align:center">
      <span class="dot"></span> 
      <span class="dot"></span> 
      <span class="dot"></span> 
    </div>
    
    <script>
    var slideIndex = 0;
    showSlides();
    
    function showSlides() {
      var i;
      var slides = document.getElementsByClassName("mySlides");
      var dots = document.getElementsByClassName("dot");
      for (i = 0; i < slides.length; i++) {
        slides[i].style.display = "none";  
      }
      slideIndex++;
      if (slideIndex > slides.length) {slideIndex = 1}    
      for (i = 0; i < dots.length; i++) {
        dots[i].className = dots[i].className.replace(" active", "");
      }
      slides[slideIndex-1].style.display = "block";  
      dots[slideIndex-1].className += " active";
      setTimeout(showSlides, 2000); // Change image every 2 seconds
    }
    </script>
    
    </body>
    </html> 

Getting the error:

[![enter image description here][2]][2]


  [1]: https://i.sstatic.net/3wndS.jpg
  [2]: https://i.sstatic.net/LyiBc.jpg