And, the test is checking if the page is scrolling as you click on the links.
Since there’s no content yet under ‘sections’, the page is not scrolling, that’s why the test is failing.
If you put some content in the sections the test will pass.
I tested it by changing section’s height 
Edit: Actually, if you fulfil user story 2 in #Layout, the test will pass since the sections will be moved out of the viewport.
2. The height of the welcome section should be equal to the height of the viewport.