CSS - rounded background
<p>Is that possible in CSS?</p>

<p><a href="https://i.stack.imgur.com/8gLFw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8gLFw.png" alt="enter image description here"></a></p>

<p>If yes, how to do this? I tried with <code>border-top-left-radius</code> but its not the same.</p>