title: Unusual shape of a textarea?
body: <p>Usually textareas are rectangular or square, like this: </p>
  
  <p><img src="https://i.stack.imgur.com/i9c5E.png" alt="Usual textarea"></p>
  
  <p>But I want a custom-shaped textarea, like this, for example: </p>
  
  <p><img src="https://i.stack.imgur.com/f4sGC.png" alt="Custom-shaped textarea"></p>
  
  <p>How is this possible?</p>