I am currently trying to make multiple images which when click will have different pictures
for example when u click an snow mountain image it will show let say a beach image, something similar to this: Image modal that displays different image than the one clicked. but will also occur in more than 3 or 4 images
I used the code here: here: http://www.w3schools.com/howto/howto_css_modal_images.asp
this is the CODE:
// Get the modal
var modal = document.getElementById("myModal");
// Get the image and insert it inside the modal - use its "alt" text as a caption
var img = document.getElementById("myImg");
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick = function(){
  modal.style.display = "block";
  modalImg.src = this.src;
  captionText.innerHTML = this.alt;
}
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
  modal.style.display = "none";
}
body {font-family: Arial, Helvetica, sans-serif;}
#myImg {
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s;
}
#myImg:hover {opacity: 0.7;}
/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  padding-top: 100px; /* Location of the box */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}
/* Modal Content (image) */
.modal-content {
  margin:0px auto;
  display: block;
  width: 100%;
  max-width: 900px;
}
/* Caption of Modal Image */
#caption {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
  text-align: center;
  color: #ccc;
  padding: 10px 0;
  height: 200px;
}
/* Add Animation */
.modal-content, #caption {  
  -webkit-animation-name: zoom;
  -webkit-animation-duration: 0.6s;
  animation-name: zoom;
  animation-duration: 0.6s;
}
@-webkit-keyframes zoom {
  from {-webkit-transform:scale(0)} 
  to {-webkit-transform:scale(1)}
}
@keyframes zoom {
  from {transform:scale(0)} 
  to {transform:scale(1)}
}
/* The Close Button */
.close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  transition: 0.3s;
}
.close:hover,
.close:focus {
  color: #bbb;
  text-decoration: none;
  cursor: pointer;
}
/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
  .modal-content {
    width: 100%;
  }
}
<!-- Trigger the Modal -->
<img id="myImg" src="https://www.w3schools.com/howto/img_nature.jpg" alt="Snow" style="width:100%;max-width:300px">
<!-- The Modal -->
<div id="myModal" class="modal">
  <!-- The Close Button -->
  <span class="close">×</span>
  <!-- Modal Content (The Image) -->
  <img class="modal-content" src="https://www.w3schools.com/howto/img_snow.jpg">
  <!-- Modal Caption (Image Text) -->
  <div id="caption"></div>
</div>
<!-- Trigger the Modal -->
<img id="myImg" src="https://www.w3schools.com/howto/img_lights.jpg" alt="Snow" style="width:100%;max-width:300px">
<!-- The Modal -->
<div id="myModal" class="modal">
  <!-- The Close Button -->
  <span class="close">×</span>
  <!-- Modal Content (The Image) -->
  <img class="modal-content" src="https://www.w3schools.com/howto/img_mountains.jpg">
  <!-- Modal Caption (Image Text) -->
  <div id="caption"></div>
</div>
one of them works but the other one doesn't
I also used the codes and method over here, but also doesn't work: Modal image galleries - multiple images
same but i used another Javascript:
var modal = document.getElementById("myModal");
var i;
var img = document.getElementsByClassName("myImg");
var modalImg = document.getElementById("img01");
 for(i=0;i< img.length;i++)
   {    
    img[i].onclick = function(){
    modal.style.display = "block";
       modalImg.src = this.src;
 }
}
var span = document.getElementsByClassName("close")[0];
span.onclick = function() { 
   modal.style.display = "none";
}
but still doesn't work
can anyone help me?
and also if possible if you have a CSS to remove the space from the bottom and bring the picture to the top, this is how it looks like for my code:
