CSS and Javascript files dont work into html file in the root folder - OpenShift

I'm using OpenShift free to make my term paper. My issue is that, in my root folder, I have the files: rankAplus.html, todo.js and dashboard.css. When I call todo.js and dashboard.css in my file rankAplus, I get this error (not found 404 - browser error). When I look inside of my element dashboard at browser, the file type is changed, from text/css to text/html. The same thing occurs with my JavaScript file. The files are the same folder. What do I need to do? Does someone know how to solve this issue?

I'm using Node JS to create server at openshift.