removing inline style from validation control

My validation controls don't line up with my textboxes because I can remove the inline styles, how can I make style=display:none disappear?
<span id="ctl00_ContentPlaceHolderSYLMainMaster_RequiredFieldValidatorOnlineID" title="User Name is required." class="validationerror" style="display:none;">Online ID is required.<br /> 
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