Normalize

First stab at normalizing the CSS, rather than resetting.

- Removing the reset caused almost no visible issues, except for default list padding/margin
- Moved some `normalize` code in to the sections where the rest of the attribute is defined

Resolves #151 
hmm, I'd probably go as follows:
````
h1,h2,h3,h4,h5,h6 {
  a {
    font-weight: inherit;
  }
}
```

and then have all the typography helpers extend the tags, so
```
.h1 {
  @extend h1;
}
```
That would include the link inside .h1 as well