How to create aspx page to support all browsers

Question

Hi Friends,


      I m creating one web application when i execute on IE its working fine but as the code executed on firefox or chrome that page size ll be differed.


example:
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  www.indianmotorcycleleague.com which was working on IE very good when i tried on firefox its seems very small.




how to  do solve these problem?

Thanks & Regards

Rocky