Index CSS

The index.html page may be too scant. It does not detect whether I am logged in or not and does not have any CSS, so it doesn't feel like a web page I should be on.

Start by reading index.html, the only file named in the issue, and inspect how the page currently handles logged-in state and styling. Done means the page distinguishes logged-in from logged-out users and includes CSS that gives it a complete web-page presentation; no tests are mentioned.

Written by the indexing model from the issue text.