CSS is ignored due to Mime type mismatch

In the evening to write a test of HTML, under the Crome are displayed normal, think of IE look under, the result style is wrong, reported a mistake:

CSS is ignored due to Mime type mismatch

Baidu a bit, I was so solved everyone is written to see the next registry in the CSS Content-type property is not text/css, according to its operation, I did it again, and indeed changed over, mark a bit:

Win----> Run--"input regedit changed the type of content type to text/css on the line.

CSS is ignored due to Mime type mismatch