In general, you should not have problems if you reset
some styles, however, there are some "CSS reset" libraries, which also define new
styles to elements, which is not expected and not a very good practice. For example, a CSS reset library can add borders to table cells - normally then don't have such. Depending on the particular case, this may affect the appearance of RadControls, but the problem is easy to fix by modifying the CSS reset rule or by adding a rule, which reapplies the correct style to the RadControl.
We have modified our skins in the past in order to prevent compatibility issues with CSS reset files, but in theory, some other issue can occur now.
Let us know if you have a specific question with this regard.
the Telerik team
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