Visual feedback on missing data needed when submitting forms

When submitting a form in Knack, it's common to overlook filling in required fields, especially if the form is lengthy. It can be frustrating to go back and locate the missing fields, particularly when they are not easily visible. Currently, Knack only displays the missing (required) fields at the top when submitting a form, requiring users to scroll back and forth. This can result in a lengthy and frustrating experience. To address this issue, we propose implementing a second approach using CSS. By adding a border or background colour to the required fields, we can enhance the user-friendliness of the form. This approach not only improves the user experience but also helps to prevent errors and reduces the reliance on validation messages.