The :fullscreen
CSS pseudo-element represents an element that’s displayed when the browser is in fullscreen mode.
:fullscreen
CSS pseudo-element selector is used to select and style an element that is being displayed in fullscreen mode.
预览
Click the button below to enter the element into fullscreen mode.
I change color in fullscreen mode!
HTML
<div class="container">
<p><em>Click the button below to enter the element into fullscreen mode. </em></p>
<div class="element" id="element"><p>I change color in fullscreen mode!</p></div>
<br />
<button onclick="var el = document.getElementById('element'); el.requestFullscreen();">
Go Full Screen!
</button>
</div>
CSS
.container {
margin: 40px auto;
max-width: 700px;
}
.element {
padding: 20px;
height: 300px;
width: 100%;
background-color: skyblue;
box-sizing: border-box;
}
.element p {
text-align: center;
color: white;
font-size: 3em;
}
.element:-ms-fullscreen p {
visibility: visible;
}
.element:fullscreen {
background-color: #e4708a;
width: 100vw;
height: 100vh;
}