title: How to make a CSS triangle background on a div without using border and image?
body: <p>I know how to create triangles with CSS with borders and using images, but in my case, I'd like to use background color.</p>
  
  <p>I want something like this image.</p>
  
  <p><a href="https://i.stack.imgur.com/qP3yt.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/qP3yt.jpg" alt=""></a></p>
  
  <p>Can anyone help me?</p>