✨ Update general style

- Smaller width of page
- Center navbar
- Fonts
- Catppuccin Mocha colours
- TODO.md
- Show all uses at the same time
- and more...

src/components/header/Header.astro

@@ -0,0 +1,7 @@
+---
+import Navbar from "./Navbar.astro"
+---
+
+<div class="m-auto">
+  <Navbar />
+</div>