Help with FCC Front Eng Project-5: Portfolio

Hello all,

I’m attempting the 5th project in the Front end developer curriculum, and I seem to have hit a roadblock.
As per the requirements, I have created a welcome section, whose height I have set to 100vh.
But, whenever I create new div elements with contents, and check the responsiveness by adjusting the height of the page, the contents of the div elements drift into the welcome-section.

drift

How do I rectify this? I tried adding a min-height to the section, which resolves this, but then it causes the height test-case to fail.

P.S.:Apologies for the unfinished page. It is still under development.

Link to the codepen: https://codepen.io/sambarvadai/pen/RwaYEKP