Design: https://www.figma.com/file/lHqzwSaWfsBiWNj9iyOaoh/plante-UI?node-id=1525%3A35122


When user clicks "Done":
- make the no-yet-filled inputs red,
- put a hint near them,
- scroll the screen to the top-most not-yet-filled input.
None of the inputs supports being red with a warning yet. So that should be implemented as well - that's the hardest part of the task.