JSFiddle - React, Tailwind, and code Playground

by Ishank Dubey

HTML

<div id="myNav" class="overlay">
  <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">&times;</a>
  <div class="overlay-content">
   Loading....
  </div>
</div>

<h2>Fullscreen Overlay Nav Example</h2>
<p>Click on the element below to open the fullscreen overlay navigation menu.</p>
<p>In this example, the navigation menu will slide downwards from the top:</p>
<span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span>

<script>
function openNav() {
    document.getElementById("myNav").style.height = "100%";
}

function closeNav() {
    document.getElementById("myNav").style.height = "0%";
}
</script>
     
</body>
</html>

CSS

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

.overlay {
    height: 0%;
    width: 100%;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0, 0.9);
    overflow-y: hidden;
    transition: 0.5s;
}

.overlay-content {
    position: relative;
    top: 25%;
    width: 100%;
    text-align: center;
    margin-top: 30px;
     font-size: 50px;
    color: #818181;
}


@media screen and (max-height: 450px) {
  .overlay {overflow-y: auto;font-size: 20px;}
  
}