Pim Schaaf

**Issue description** Clicking the listbox appears to trigger submit instantly when the listbox is nested in a `` tag. **Example** Used https://github.com/dequelabs/pattern-library/wiki/selects example code, nested in `` tag. See https://codepen.io/openroads/pen/rNOKEwP...

Susy 3 appears to exclude the full() mixin, which is used on line 4 of gravity-forms-scss/scss/partials/_progress.scss which will throw on an error like: `Error: no mixin named full` `on line...