HTML, CSS Assignment Help | Adding Light box and effects In Web Pages



After Adding effects In:



Html Code:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Side Nav with lIght box</title>
    <link rel="stylesheet" type="text/css" href="style.css">
    <script src="style.js"></script>

</head>
<body>

  <div id="sidepush_lightbox">

      <div id="mySidenav" class="sidenav">
        <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">&times;</a>
        <a href="javascript:void(0)" onclick = "addEffect()">Add Effect</a>
      </div>
      
      <span style="font-size:50px;cursor:pointer" onclick="openNav()">&#9776;</span>


    <div id = "lightbox_container">

      <h2 style="text-align:center">Lightbox</h2>
  
      <div class="row">
        <div class="column">
          <img src="images/img_nature.jpg" id = "myImage" style="width:100%" onclick="openModal();currentSlide(1)" class="hover-shadow cursor">
        </div>
        <div class="column">
          <img src="images/img_snow.jpg" id = "myImage1" style="width:100%" onclick="openModal();currentSlide(2)" class="hover-shadow cursor">
        </div>
        <div class="column">
          <img src="images/img_mountains.jpg" id = "myImage2" style="width:100%" onclick="openModal();currentSlide(3)" class="hover-shadow cursor">
        </div>
        <div class="column">
          <img src="images/img_lights.jpg" id = "myImage3" style="width:100%" onclick="openModal();currentSlide(4)" class="hover-shadow cursor">
        </div>
      </div>

    
  </div>


<div id="myModal" class="modal">
  <span class="close cursor" onclick="closeModal()">&times;</span>
  <div class="modal-content">

    <div class="mySlides">
      <div class="numbertext">1 / 4</div>
      <img src="images/img_nature_wide.jpg" style="width:100%">
    </div>

    <div class="mySlides">
      <div class="numbertext">2 / 4</div>
      <img src="images/img_snow_wide.jpg" style="width:100%">
    </div>

    <div class="mySlides">
      <div class="numbertext">3 / 4</div>
      <img src="images/img_mountains_wide.jpg" style="width:100%">
    </div>
    
    <div class="mySlides">
      <div class="numbertext">4 / 4</div>
      <img src="images/img_lights_wide.jpg" style="width:100%">
    </div>
    
    <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
    <a class="next" onclick="plusSlides(1)">&#10095;</a>

    <div class="caption-container">
      <p id="caption"></p>
    </div>


    <div class="column">
      <img class="demo cursor" src="images/img_nature_wide.jpg" style="width:100%" onclick="currentSlide(1)" alt="Nature and sunrise">
    </div>
    <div class="column">
      <img class="demo cursor" src="images/img_snow_wide.jpg" style="width:100%" onclick="currentSlide(2)" alt="Snow">
    </div>
    <div class="column">
      <img class="demo cursor" src="images/img_mountains_wide.jpg" style="width:100%" onclick="currentSlide(3)" alt="Mountains and fjords">
    </div>
    <div class="column">
      <img class="demo cursor" src="images/img_lights_wide.jpg" style="width:100%" onclick="currentSlide(4)" alt="Northern Lights">
    </div>
  </div>
</div>

</div>

</body>
</html>


Css Code Script:


/* The side navigation menu */
.sidenav {

    height: 100%; /* 100% Full-height */
    width: 0; /* 0 width - change this with JavaScript */
    position: fixed; /* Stay in place */
    z-index: 1; /* Stay on top */
    top: 0;
    left: 0;
    background-color: #111; /* Black*/
    overflow-x: hidden; /* Disable horizontal scroll */
    padding-top: 60px; /* Place content 60px from the top */
    transition: 0.5s; /* 0.5 second transition effect to slide in the sidenav */
}

/* The navigation menu links */
.sidenav a {
   font-size: 20px;
   padding:5px 10px 5px 10px;
    text-decoration: none !important;    
    color: #818181;
    background: transparent;
    display: block;
    transition: 0.3s
}

/* When you mouse over the navigation links, change their color */
.sidenav a:hover, .offcanvas a:focus{
    color: #f1f1f1;
}

/* Position and style the close button (top right corner) */
.sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}

.sidenav .removebtn {
    color: #e9e9e9;
    position: absolute;
    top: 0;
    left: 25px;
    font-size: 20px;
    margin-right: 50px;
}

/* Style page content - use this if you want to push the page content to the right when you open the side navigation */
#main {
    transition: margin-left .5s;
    padding: 20px;
}

/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */
@media screen and (max-height: 450px) {
    .sidenav {padding-top: 15px;}
    .sidenav a {font-size: 18px;}
}

#side_push_nav
{
    height: auto;
    width: 100px;
}

#lightbox_container
{
    height: auto;
    width: 1000px;
    margin-left: 275px;
    margin-top: 50px;

}

.column {
    float: left;
    width: 25%;
    padding: 5px;
  }



  body {
    font-family: Verdana, sans-serif;
    margin: 0;
  }
  
  * {
    box-sizing: border-box;
  }
  
  .row > .column {
    padding: 0 8px;
  }
  
  .row:after {
    content: "";
    display: table;
    clear: both;
  }
  
  
  /* The Modal (background) */
  .modal {
    display: none;
    position: fixed;
    z-index: 1;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: black;
  }
  
  /* Modal Content */
  .modal-content {
    position: relative;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    width: 90%;
    max-width: 1200px;
  }
  
  /* The Close Button */
  .close {
    color: white;
    position: absolute;
    top: 10px;
    right: 25px;
    font-size: 35px;
    font-weight: bold;
  }
  
  .close:hover,
  .close:focus {
    color: #999;
    text-decoration: none;
    cursor: pointer;
  }
  
  .mySlides {
    display: none;
  }
  
  .cursor {
    cursor: pointer;
  }
  
  /* Next & previous buttons */
  .prev,
  .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -50px;
    color: white;
    font-weight: bold;
    font-size: 20px;
    transition: 0.6s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
    -webkit-user-select: none;
  }
  
  /* 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);
  }
  
  /* Number text (1/3 etc) */
  .numbertext {
    color: #f2f2f2;
    font-size: 12px;
    padding: 8px 12px;
    position: absolute;
    top: 0;
  }
  
  img {
    margin-bottom: -4px;
  }

  
  
  .caption-container {
    text-align: center;
    background-color: black;
    padding: 2px 16px;
    color: white;
  }
  
  .demo {
    opacity: 0.6;
  }
  
  .active,
  .demo:hover {
    opacity: 1;
  }
  
    img.hover-shadow {
    transition: 0.3s;
    }
    
    .hover-shadow:hover {
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    }
  
    


JavaScript Code

/* Set the width of the side navigation to 250px and the left margin of the page content to 250px */
function openNav() {
    document.getElementById("mySidenav").style.width = "250px";
    document.getElementById("main").style.marginLeft = "250px";
}

/* Set the width of the side navigation to 0 and the left margin of the page content to 0 */
function closeNav() {
    document.getElementById("mySidenav").style.width = "0";
    document.getElementById("main").style.marginLeft = "0";
}

/*edit code*/

function addEffect() {
    var image = document.getElementById('myImage');
    var image1 = document.getElementById('myImage1');
    var image2 = document.getElementById('myImage2');
    var image3 = document.getElementById('myImage3');

/*code for add effect 50% */
    
        image.style.opacity = "0.5";
        image.style.filter  = 'alpha(opacity=50)';

        image1.style.opacity = "0.5";
        image1.style.filter  = 'alpha(opacity=50)';

        image2.style.opacity = "0.5";
        image2.style.filter  = 'alpha(opacity=50)';

        image3.style.opacity = "0.5";
        image3.style.filter  = 'alpha(opacity=50)';


}


/* close */


function openModal() {
    document.getElementById("myModal").style.display = "block";
  }
  
  function closeModal() {
    document.getElementById("myModal").style.display = "none";
  }
  
  var slideIndex = 1;
  showSlides(slideIndex);
  
  function plusSlides(n) {
    showSlides(slideIndex += n);
  }
  
  function currentSlide(n) {
    showSlides(slideIndex = n);
  }
  
  function showSlides(n) {
    var i;
    var slides = document.getElementsByClassName("mySlides");
    var dots = document.getElementsByClassName("demo");
    var captionText = document.getElementById("caption");
    if (n > slides.length) {slideIndex = 1}
    if (n < 1) {slideIndex = slides.length}
    for (i = 0; i < slides.length; i++) {
        slides[i].style.display = "none";
    }
    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";
    captionText.innerHTML = dots[slideIndex-1].alt;
  }


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