How to get a circular outline on a circular <button> using CSS in Safari

Question

I'm trying to get a round button with the same color outline, but it doesn't seem possible. The outline always ends up being square. Is there a way to achieve this with a , or maybe it can only be achieved with a ?

button {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 40px;
  cursor: pointer;
  background-color: black;
  display: inherit;
  outline: 5px solid black;
  outline-offset: 5px;
}

<button></button>

I've added a picture because this only seems to happen on Safari...Screenshot from Safari snippet

I need it to work in all browsers, especially on mobile devices.

Answer 1

Safari This bug is fixed in Safari Technical Preview 157. Source: https://webkit.org/blog/13575/release-notes-for-safari-technology-preview-157/

Answer 2

You can use this "hack".

Information: In the Brave browser, your snippet also appears as a square;

button {
  position: relative;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 40px;
  cursor: pointer;
  background-color: black;
  display: inherit;
  margin:10px 2px;
}

button::after {
  position: absolute;
  top: -10px;
  content: '';
  left: -10px;
  width: 50px;
  height: 50px;
  border: 5px solid black;
  border-radius: 40px;
  background-color: transparent;
  display: inherit;
}