How TO - Overlay
Learn how to create an overlay effect with CSS.
Overlay
Learn how to create an overlay effect:
Overlay
How To Create an Overlay Effect
Step 1) Add HTML:
Use any element and place it anywhere inside the document:
Example
<div id="overlay"></div>
Step 2) Add CSS:
Style the overlay element:
Example
#overlay {
position: fixed; /* Sit on top of the
page content */
display: none; /* Hidden by default */
width: 100%; /*
Full width (cover the whole page) */
height: 100%; /* Full height (cover the whole page) */
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0,0,0,0.5); /* Black background with opacity */
z-index: 2;
/* Specify a stack order in case you're using a different order for other
elements */
cursor: pointer; /* Add a pointer on hover */
}
Step 3) Add JavaScript:
Use JavaScript to turn on and off the overlay effect:
Example
function on() {
document.getElementById("overlay").style.display
= "block";
}
function off() {
document.getElementById("overlay").style.display = "none";
}
Try it Yourself »
Overlay Effect with Text
Add anything you want inside the overlay, and place it where you want. In this example we add text in the middle of the page:
Example
<style>
#text{
position: absolute;
top: 50%;
left: 50%;
font-size:
50px;
color: white;
transform:
translate(-50%,-50%);
-ms-transform:
translate(-50%,-50%);
}
</style>
<div id="overlay">
<div id="text">Overlay Text</div>
</div>
Try it Yourself »
