JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <form id="form1" runat="server">
        <div class="container">
            adsf
        </div>
    </form>
</body>
</html>

CSS

html,body {
  height:100%;
}

#form1
{
  width:80%;
  height:80%;
  background-color:green;
}