Improved the UI

Today I worked on the UI.

I wish I had past screenshots to compare.

Here's today's work:

• Homepage
• Authentication

Styling Amplify's UI is hard. For the next projects, I'll use Amplify's library but not its UI components.

Next up:

• Animate the rocket and the clouds 😁
• Add smooth scrolling to the "show me the courses" button
• Style course presentation page
• Style course content page