JSFiddle - React, Tailwind, and code Playground

by Yuriy Petrichenko

HTML

<h2>My Example</h2>
<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal</button>
<!-- The Modal -->
<div id="myModal" class="modal">
    <!-- Modal content -->
    <div class="modal-content">
        <div class="modal-header">
            <span class="close">&times;</span>
            <h2>Modal Header Text</h2>
        </div>
        <div class="modal-body">
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Asperiores alias rerum vel corrupti fugit aut voluptatem nemo assumenda. Dolorem perspiciatis ut ullam, nam cum dolorum expedita ea cupiditate in hic.</p>
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sapiente fugit atque quam voluptatibus blanditiis, sed magni, assumenda voluptas omnis aliquid laboriosam quis voluptate odit, explicabo eveniet aut tempora autem perferendis.</p>
        </div>
        <div class="modal-footer">
            <h3>Modal Footer</h3>
        </div>
    </div>
</div>

CSS

/* 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, 0.4);
    /* Black w/ opacity */
}


/* Modal Content */

.modal-content {
    position: relative;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    width: 80%;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    -webkit-animation-name: animatetop;
    -webkit-animation-duration: 0.4s;
    animation-name: animatetop;
    animation-duration: 0.4s
}


/* Add Animation */

@-webkit-keyframes animatetop {
    from {
        top: -300px;
        opacity: 0
    }
    to {
        top: 0;
        opacity: 1
    }
}

@keyframes animatetop {
    from {
        top: -300px;
        opacity: 0
    }
    to {
        top: 0;
        opacity: 1
    }
}


/* The Close Button */

.close {
    color: white;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.modal-header {
    padding: 2px 16px;
    background-color: #88afef;
    color: white;
}

.modal-body {
    padding: 2px 16px;
}

.modal-footer {
    padding: 2px 16px;
    background-color: #88afef;
    color: white;
}

#myBtn {
    color: #292929;
    font-size: 25px;
}

JavaScript

// Get the modal
var modal = document.getElementById('myModal');

// Get the button that opens the modal
var btn = document.getElementById("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks the button, open the modal 
btn.onclick = function() {
    modal.style.display = "block";
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
    modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal) {
        modal.style.display = "none";
    }
}