This webpage http://necolas.github.io/normalize.css/1.1.3/test.html
a js file status code 404
That is a very old version of normalize. I suggest to use: http://necolas.github.io/normalize.css/8.0.0/test.html to check instead (doesn't have the error you mention)
@luojianet If you were comparing old versions to new versions, and you really needed to test version 1.1.3, you could download it yourself and just fix or remove the broken script. (https://github.com/necolas/normalize.css/releases/tag/v1.1.3)
If not, follow @coliff's advice :+1:
Most helpful comment
That is a very old version of normalize. I suggest to use: http://necolas.github.io/normalize.css/8.0.0/test.html to check instead (doesn't have the error you mention)