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Editorial Team
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Asked: 2026-05-24T05:34:08+00:00

I just now found that when I try to change background-color using YUI for

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I just now found that when I try to change background-color using YUI for a body it doesn’t work in FF5 and Opera but works in IE and Chrome. However, if I set color values for background it works in FF as well as Opera. I thought that background-color was just some sort of specialisation for background. Which one can be used safely across all browsers? Code in question can be seen here, background or background-color? Which one is safe to use?, I still have problem understanding how YUI handles events. I have also hosted the page with modified code here http://www.kumarchetan.com/yui-module.html, try accessing this page using IE, Chrome, FF and Opera and notice how smoothly the values change in different browsers.

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1 Answer

  1. Editorial Team

    To fix your problem, add this CSS:

    html, body {
    margin: 0;
    padding: 0;
    height: 100%
}

    The html and body do not take up 100% height, which is what you need to handle mousemove events. The background for the root element is handled specially, but that’s not the same as having 100% height.

    The reason for the inconsistent behaviour between browsers is possibly to do with @BoltClock’s edit, and also probably to do with the fact that your page is using Quirks Mode, because you don’t have a doctype. Add this as the very first line:

    <!DOCTYPE html>
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