What exactly happens when a browser doesn't support media queries?

Question

I\'m building my site with mediaqueries to adapt to different screen sizes.

By coincidence I checked my site in an old pc with an unupdated browser and found out that I

Answer 1

If the browser doesn't support Media Queries then nothing happens. It ignores the entire conditional block of styles.

If you wanted to support then you can use this JS http://code.google.com/p/css3-mediaqueries-js/