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I have a layout with two columns - a left div and a right div.
The right div has a grey background-color, and I need it to expand vertically depending on the height of the user's browser window. Right now the background-color ends at the last piece of content in that div.
I've tried height:100%, min-height:100%;, etc.
801
container div has two parent elements: the <body> and the <html> element. And we all know that the default value of the height property is auto , so if we also set the height of <body> and <html> elements to 100%, the resulting height of the container div becomes equal the 100% height of the browser window.
There are a couple of CSS 3 measurement units called:
From the linked W3 Candidate Recommendation above:
The viewport-percentage lengths are relative to the size of the initial containing block. When the height or width of the initial containing block is changed, they are scaled accordingly.
These units are vh (viewport height), vw (viewport width), vmin (viewport minimum length) and vmax (viewport maximum length).
For this question, we can make use of vh: 1vh is equal to 1% of the viewport's height. That is to say, 100vh is equal to the height of the browser window, regardless of where the element is situated in the DOM tree:
<div></div>
div {
height: 100vh;
}
This is literally all that's needed. Here is a JSFiddle example of this in use.
This is currently supported on all up-to-date major browsers apart from Opera Mini. Check out Can I use... for further support.
In the case of the question at hand, featuring a left and a right divider, here is a JSFiddle example showing a two-column layout involving both vh and vw.
100vh different from 100%?Take this layout for example:
<body style="height: 100%">
<div style="height: 200px">
<p style="height: 100%; display: block;">Hello, world!</p>
</div>
</body>
The p tag here is set to 100% height, but because its containing div has 200 pixels height, 100% of 200 pixels becomes 200 pixels, not 100% of the body height. Using 100vh instead means that the p tag will be 100% height of the body regardless of the div height. Take a look at this accompanying JSFiddle to easily see the difference!
55
If you want to set the height of a <div> or any element, you should set the height of <body> and <html> to 100% too. Then you can set the height of element with 100% :)
Here is an example:
body, html {
height: 100%;
}
#right {
height: 100%;
}
If you’re able to absolutely position your elements,
position: absolute;
top: 0;
bottom: 0;
would do it.
308
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