.app-c-govspeak-editor__preview-button-wrapper {
  text-align: right;
}

.app-c-govspeak-editor__textarea--hidden {
  display: none;
}

.app-c-govspeak-editor__preview {
  display: none;
  border: 1px solid $govuk-border-colour;
  padding: govuk-spacing(4);
}

.app-c-govspeak-editor__preview--show {
  display: block;
}

.app-c-govspeak-editor {
  margin-bottom: govuk-spacing(6);
}

.app-c-govspeak-editor__preview-button-wrapper {
  text-align: right;
}

.app-c-govspeak-editor__textarea--hidden {
  display: none;
}

.app-c-govspeak-editor__preview {
  display: none;
  border: 1px solid $govuk-border-colour;
  padding: govuk-spacing(4);
}

.app-c-govspeak-editor__preview--show {
  display: block;
}

Add margin bottom to editor
Add margin bottom to editor

This will give it some buffer between the editor and the next field
