You need to set the height of html
and body
to 100% too before. Then you can set your element height 100%.
body, html {
height: 100%;
}
#divL, #divR {
height: 100%;
}
Updated fiddle.
There are a few options you may find useful:
vh (viewport height) vw (viewport width) vmin (viewport minimum length) vmax (viewport maximum length) Now, let’s have a look at a real example. Imagine you want to create a website with two sections, each one of them with the size of the browser window.
Here’s just a simplified code example of the HTML:
<div id="welcome">
your content on screen 1
</div>
<div id="projects">
your content on screen 2
</div>
and here’s the CSS using vh:
div#welcome {
height: 100vh;
background: black;
}
div#projects {
height: 100vh;
background: yellow;
}
You can see more in:
http://stanhub.com/how-to-make-div-element-100-height-of-browser-window-using-css-only/