[Bug?]: Landing page is broken on small screen size

[DitherWither]

Duplicates

• [X] I have searched the existing issues

Latest version

• [X] I have tested the latest version

Current behavior 😯

When on a small enough screen size, the page has a black bar on the right, caused by the main tag not being wide enough

This gets worse when the dark mode/light mode selector is opened

Expected behavior 🤔

There should be no black bar on the right

Steps to reproduce 🕹

Steps:

1. Open https://start.solidjs.com/
2. Open devtools and set dimentions to "iPhone SE" or "Samsung Galaxy S8+"
3. Refresh the page
4. Click the light/dark mode button

Context 🔦

No response

Your environment 🌎

Google Chrome: 127.0.6485.0 (Official Build) dev (64-bit)