Clean up readability of utility class style guide

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Paul Slaughter 2019-05-13 15:02:51 -05:00
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@ -9,20 +9,25 @@ easy to maintain, and performant for the end-user.
As part of the effort for [cleaning up our CSS and moving our components into GitLab-UI](https://gitlab.com/groups/gitlab-org/-/epics/950)
led by the [GitLab UI WG](https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/20623) we prefer the use of utility classes over adding new CSS. However, complex CSS can be addressed by adding component classes.
We have a few internal utility classes in [`common.scss`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/assets/stylesheets/framework/common.scss)
and we use [Bootstrap's Utility Classes](https://getbootstrap.com/docs/4.3/utilities/)
#### Where are utility classes defined?
- [Bootstrap's Utility Classes](https://getbootstrap.com/docs/4.3/utilities/)
- [`common.scss`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/assets/stylesheets/framework/common.scss) (old)
- [`utilities.scss`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/assets/stylesheets/utilities.scss) (new)
#### Where should I put new utility classes?
New utility classes should be added to [`utilities.scss`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/assets/stylesheets/utilities.scss). Existing classes include:
**Background color**: `.bg-variant-shade` e.g. `.bg-warning-400`
**Text color**: `.text-variant-shade` e.g. `.text-success-500`
| Name | Pattern | Example |
|------|---------|---------|
| Background color | `.bg-{variant}-{shade}` | `.bg-warning-400` |
| Text color | `.text-{variant}-{shade}` | `.text-success-500` |
| Font size | `.text-{size}` | `.text-2` |
- variant is one of 'primary', 'secondary', 'success', 'warning', 'error'
- shade is on of the shades listed on [colors](https://design.gitlab.com/foundations/colors/)
**Font size**: `.text-size` e.g. `.text-2`
- **size** is number from 1-6 from our [Type scale](https://design.gitlab.com/foundations/typography)
- `{variant}` is one of 'primary', 'secondary', 'success', 'warning', 'error'
- `{shade}` is on of the shades listed on [colors](https://design.gitlab.com/foundations/colors/)
- `{size}` is a number from 1-6 from our [Type scale](https://design.gitlab.com/foundations/typography)
### Naming