It looks like you need a doctype
http://validator.w3.org/check?uri=http%3A%2F%2Fdev.ux-pm.com%2F&charset=%28detect+automatically%29&doctype=Inline&group=0
This will probably clear up quite a few issues with things looking wrong on older versions of IE but this won’t necessarily fix everything. Validating is not a cure all but I do find that the more compliant the code is then the less likely bugs occur.
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solved my website is a disaster on IE 9 and less [closed]