:fullscreen
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The :fullscreen
CSS pseudo-class matches every element that is currently in fullscreen mode. If multiple elements have been put into fullscreen mode, this selects them all.
Syntax
:fullscreen {
/* ... */
}
Usage notes
The :fullscreen
pseudo-class lets you configure your stylesheets to automatically adjust the size, style, or layout of content when elements switch back and forth between fullscreen and traditional presentations.
Examples
Styling a Fullscreen Element
This example applies a different background color to a <div>
element, depending on whether or not it is in fullscreen mode. It includes a <button>
to toggle fullscreen on and off.
<div class="element">
<h1>MDN :fullscreen pseudo-class demo</h1>
<p>
This demo uses the <code>:fullscreen</code> pseudo-class to automatically
change the background color of the <code>.element</code> div.
</p>
<p>
Normally, the background is light yellow. In fullscreen mode, the background
is light pink.
</p>
<button class="toggle">Toggle Fullscreen</button>
</div>
The :fullscreen
pseudo-class is used to override the background-color
of the <div>
when it is in fullscreen mode.
.element {
background-color: lightyellow;
}
.element:fullscreen {
background-color: lightpink;
}
The following JavaScript provides an event handler function that toggles fullscreen when the <button>
is clicked.
document.querySelector(".toggle").addEventListener("click", function (event) {
if (document.fullscreenElement) {
// If there is a fullscreen element, exit full screen.
document.exitFullscreen();
return;
}
// Make the .element div fullscreen.
document.querySelector(".element").requestFullscreen();
});
Demo
Specifications
Specification |
---|
Fullscreen API Standard # :fullscreen-pseudo-class |
Browser compatibility
BCD tables only load in the browser