CSS Button Styling: Margin, Class & Back Button

This code snippet demonstrates how to style a button using CSS. It sets a 20px bottom margin and applies two classes: 'button' and 'back'.

<button style='margin-bottom: 20px;' class='button back'>Click Me</button>

The code itself only sets the button's visual appearance. To implement data submission, you'll need to add event handling logic to the button's click event. This can be done using JavaScript or other frontend technologies.

For example, you could use JavaScript to capture user input, create a form object, and send it to a server using an API call when the button is clicked.