What is button autofocus?
Definition and Usage
The autofocus attribute is a boolean attribute. When present, it specifies that a button should automatically get focus when the page loads.
How do I make my button focusable?
You can make it focusable by adding a tabindex=0 attribute value to it. That will add the element to the list of elements that can be focused by pressing the Tab key, in the sequence of such elements as defined in the HTML document.