Since you're not showing code it's hard to say what's going on but this is the basics of what you need to produce an html page.
<!DOCTYPE html>
<html lang="en-us">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Page Title</title>
<!--
</head>
<body>
<p>your code need to go here</p>
</body>
</html>