I think that ```.text-left``` is not semantic enough. You should have to use more descriptive names.

For example 

```
%th
   .team-header
     = t('leagues.edit.team_header_row')
```

and https://github.com/fbrusatti/fulbo/pull/63/files#L0R164 should be

```
.team-header, .owner-header, .action-header {
  .text-left;
}
```