I reckon this belongs with the `_tabs.less` file, makes more sense since we might want this in other places besides Football.

Also, could you rewrite the CSS to not be nested (see LESS at the bottom of style guide here: https://github.com/guardian/pasteup/blob/master/less/README.md) -- eg:

```css
.fake tabs li {
}
.fake-tabs .tabs-selected {
}
.fake-tabs a {
}
// etc
```