CSS or invalid (X) HTML go up to viruses. A W3Cvalidated site can be simply made browser friendly. Certify your (X) HTML code with W3C validator and your CSS file with W3C CSS validator.

At this time you require to check your site in every browser to see whether it’s working good or not.  And after checking you need to make a note of all bugs. Certainly your installed browser is not sufficient to do the compatibility test since there are several other browsers accessible too. To do this drill competently convert2xhtml.com can be used.  And this site also shows the screen shots of your site on diverse browsers. Simply you have to type in your URL and put down for a few time.

Evaluate all screen shots you get and ensure to speck them down.
People like changes with time. Similar happens with the browser preference. There are several browsers accessible and it is not potential that everybody is using all browsers. Browser usability fondness can be careful or can be widespread; dissimilar geographical areas have diverse choice of browser usability.
Whether you have team of visitors approaching through several browsers and your site is not capable to formulate on it, then you can surely afford to leave that browser. Since it will scarcely make any disparity.
At present you are very attentive of the viruses and you require watching for the HTML code or CSS attributes that are main cause of this problem. And if you still get the reason either look for the answer in webmaster forums or post a subject yourself. And you can reach up to several trustworthy companies providing such service.

And the last step is to attach the issue. And this could be done through setting up the code that is the main cause of the difficulty. For the explicit browser, write the code another time. You could get several CSS hacks over internet to do that.Formulating site cross browser friendly is not complicated but essential.
http://www.convert2xhtml.com transfers your devise files from diverse common icon formats (JPG,PSD, GIF, AI, PNG) into the best superiority cross-browser friendly W3C validated XHTML/CSS markup. Ensure Convert2xhtml for our PSD slicing services and PSD to XHTML Conversion.