Style Your Goals section

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`.button--primary` is its own component so shouldn't be contained within the `.form` component. Instead, I would follow the same process as you did for the `_form.scss` partial and add a `_button.scss` one. Then use the `.button` class with a suitable modifier.

When creating new components we always have one eye on whether that component could be useful in Dough, so if you come across any new components/layout that you think are useful to Dough we can think about promoting them.