Why do CSS styles only take affect when placed in a style tag in my form and not in the associated CSS file?
问题 Thanks to [this question][1] about repositioning the AJAX toolkit's CalloutExtender control, for an answer to my problem of positioning Validator CallOuts on a web form. Can someone tell me why adding the CSS classes directly to my web page within a <style> element has the desired effect but when adding the same classes to a linked CSS file, they have no effect? So, adding: <style> .CustomValidator {position:relative;margin-left:-80px;} .CustomValidator div {border:solid 1px Black;background