zoho creator widget not filling container

i created a zoho widget that just fills the container viewport a simple html file

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      html,
      body {
        margin: 0;
        height: 100%;
      }
      .div1 {
        height: 100vh !important; /* Ensure it takes full viewport height */
        display: flex; /* Flexbox for better layout control */
        width: 100vw;
        background-color: red;
      }
      .div2 {
        height: 100% !important;
        width: 100% !important;
        background-color: yellow !important;
      }
    </style>
  </head>
  <body>
    <div class="div1">
      <div class="div2"></div>
    </div>
  </body>
</html>

the problem is that the container height is 1100 px but my code is only filling 700px eventhough i stated it to be the full viewport lentgh.

as u can see i provided the container not being fully filled. the line height for the widget is set to auto but if i set it to custom and then i set the height to 1102 px as the container height only then it fills the viewport.