Have you ever wondered what your site would like like with a different font, a different color background, or even with entirely different text? You can do this from most standard browsers.
Most people already know about the Firefox Firebug add-on and may even know about Google Chrome "Inspect Element" option, but did you know that you can use the F12 key in Internet Explorer 8 to launch a Developer Tools dialog.
All three of these tools allow you to modify HTML and CSS within a locally cached copy of the web page being viewed. You can edit many elements in the page without effecting permanent changes to the website itself.
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