title: CSS for border in corners only
body: <p>I need ideas on how to make a button look like this:</p>
  
  <p><a href="https://i.stack.imgur.com/WvvRa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WvvRa.png" alt="enter image description here"></a></p>
  
  <p>I don't know how to make square corners like that and I can't find any solutions online. Also, on hover, the border should be all around the button (just a normal 2px border.)</p>