Snap Intro Section with Dropdown Navigation, React + SCSS

I would greatly appreciate any feedback you may have!

Some parts of the code I'm unsure of:

• The backdrop that appears when the hamburger menu on mobile is toggled. I had to use an empty div. Is there a better way to achieve this?
• The positioning of the main content. To name a few things, the main content wrapper uses a negative margin because the header was slightly too tall. I used a float: right on an image to stick it to the right of the container. I could have used flex, but float seemed to work just like I wanted it to, and it saved me a couple of lines. I heard from somebody on the internet that we shouldn't use float properties, so that's why I'm unsure about using it.
• How is my folder structure?"