Sticky submit button at top and bottom of the form?

1. Where should the submit button be?
2. Does the submit button go inside the form?
3. Do forms need submit buttons?

Where should the submit button be?

Submit buttons are placed at the bottom of the page to optimize top to bottom flow. There should always be two buttons, a primary action button that will commit changes made by the user and a Cancel button that will abort those changes.

Does the submit button go inside the form?

You can tie a submit button to a form that the button doesn't live inside of. The trick is to give the form an id and then reference that id with the button's form property. With this setup, clicking the Submit button will cause the form to be submitted.

Do forms need submit buttons?

If you don't have any submit button it is acceptable after all it is an element of form tag and if it is not required you may not add it with in form . This will not broke any web standard.