CSS: How to get this overlay to extend 100% with scrolling?
Here is an example of the issue in question:
http://dev.madebysabotage.com/playground/overlay.html
You see there is a gray overlay over the entire page, but if you scroll down, the content below the 开发者_开发问答initial loaded page doesn't have the overlay.
I have an #overlay div and it seems it doesn't keep the 100% height during scrolling, so trying to figure out how to pull that off.
Here's the full source:
html {
height: 100%;
min-height: 100%;
}
body {
height: 100%;
min-height: 100%;
font-family: Georgia, sans-serif;
}
#overlay {
background: rgba(0, 0, 0, 0.4);
width: 100%;
height: 100%;
min-height: 100%;
position: absolute;
top: 0;
left: 0;
z-index: 10000;
}
header,
section,
footer {
width: 800px;
margin: 0 auto 20px auto;
padding: 20px;
background: #ff0;
}
section {
min-height: 1500px;
}<div id="overlay"></div>
<header>
<h1>Header</h1>
</header>
<section>
<p>Here's some sweet content</p>
</section>
<footer>
<p>Here's my footer</p>
</footer>position: fixed; on the overlay.
Change #overlay position:absolute to position:fixed
This happens because the #overlay position: absolute is relative to the <html> and using it's dimensions, which is only the viewport height.
To make sure that the #overlay uses the dimensions of whole page, you could use position: relative; on the <body> (but you will need to remove the min-height: 100% and height: 100% on the <body> first because this makes it use the viewport size). The #overlay will then use the <body> dimensions and fill the entire page.
加载中,请稍侯......
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