Add <a> css

Colours for dev purposes only
Remove tags from index

Tags on index pages are distracting. I might add them to article pages.
Add index css

## HTML
* <Time> tag was moved up for correct float:left
* Summary now in paragraph

## CSS
* Disable ol styling
* Padding for article
* Disable default margin for h2 and p
* Use float:left on <time>
* Padding on <time> should make it exactly has high as one line of h2
* Margin-left on <time> to avoid collision with h2 when resizing