In alignment with M101 spatial visual element box-shadow: 0 0.15em 0 0 rgba( 0, 0, 0, 0.15 ) shouldn't be used for fieldset element. It should only just used on elements like dialogs, dropdown menus, tooltips or the VE toolbar.
Together with this proposed change we'll also harmonize padding of oo-ui-panelLayout-padded. The legend element visually isn't providing the same vertical padding on top versus bottom due to the line-height of the legend element.
| Before | After |
|---|---|
 |  |
Expected outcome:
- Remove box-shadow and
- harmonize padding by reducing it at top when legend is visible.