Start with Grid or Flexbox

Hey webflow users,

I want to start with my first design and I have some struggles with the grid system. Attached you can find my layout. How should I start? Building a section first, put in a grid and fill in the elements?

My problem is I want my footer on the bottom of the page. How could I do this?

Thank you and best!!

Why use grid at all? make a nav, section for the header, section for the 2 sublines with columns and then add your footer as a section at the bottom.