fixes #8469 - css cleanup, whitespaces and remove dead code

We can use the power of scss here...
```css
.subnav ul {
  margin-top: 7px;
  margin-bottom: 0;
  li {
    list-style-type: none;
    margin: 0;
    display: inline-block;
  }
  a {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: bold;
    text-decoration: none;
    color: #666;
    border: 1px solid transparent;
    border-radius: 10px;
  }
}

```