To control the size of the text area, we use the rows attribute to set the rows of text and cols attribute to set the number of characters.

Set the rows attribute to "3" and the cols attribute to "15".

<html>
<head><style>body {min-height: 300px;} input { font-size: 16px; } textarea { font-size: 16px; } </style></head>
<body>
  <h1>Leave a Review</h1>
  <textarea rows="3" cols="15"></textarea>
</body>
</html>]]>

Make sure to set the attributes with rows="3" cols="15".