Javascript error on github pages.

Hi,

I am having an issue when load my page to github pages. 

In my local machine, Javascript works fine but when I upload it to github pages system returns 404 error into console log.

The pages is

https://leo-skinner.github.io/js-bin-converter/

Errors:

Navigated to https://leo-skinner.github.io/js-bin-converter/
leo-skinner.github.io/:9 GET https://leo-skinner.github.io/js-bin-converter/_css/style.css net::ERR_ABORTED 404
leo-skinner.github.io/:17 GET https://leo-skinner.github.io/js-bin-converter/_img/banner-top.png 404
leo-skinner.github.io/:33 GET https://leo-skinner.github.io/_js/convert.js net::ERR_ABORTED 404
leo-skinner.github.io/:34 GET https://leo-skinner.github.io/_js/checkdigits.js net::ERR_ABORTED 404

Best regards!