Which property of a table specifies whether the browser should control the appearance of the adjacent borders?

Answer 1

if you dont declare border in css it defaults to browser appearance

Answer 2

I think that border properties are no longer supported in HTML 5, so here is a CSS example:

table {
border: 1px solid black;
}

And here is more info: https://www.w3schools.com/css/css_table.asp