CSS & Bootstrap

Bootstrap is a ready-made CSS library. You add two links to your page and everything looks decent immediately.

1.1-startHere-Template.html — Starter template
Copy this as the starting point for a new Bootstrap page.
 2.2-SecondExample.html — Using the components
The grid, buttons, and other pieces Bootstrap gives you.

View the source of both pages — the useful part is the two <link> and <script> tags at the top.