Bug - Fix website formatting on mobile

[edonehoo]

There are a handful of pages that don't display properly on mobile, likely due to custom implementations or lack of proper breakpoint consideration.

### Tasks
- [ ] https://github.com/patternfly/patternfly-org/issues/4373
- [ ] Bug - Fix mobile issues on get-started/develop
- [ ] Bug - Fix mobile issues on design-foundations/colors
- [ ] Bug - Fix mobile issues on design-foundations/icons
- [ ] Bug - Fix mobile issues on design-foundations/motion