appbar doesn't extend to top of page-CodePudding

I'm making as simple game as a webpage with HTML/CSS/JS (no framework). I decided to try out

How do I get rid of the white stripe at the top? Examples from their docs don't have that. What am I missing

CodePudding user response：

Immediately after posting this, I found that muicss declares a style

h1, h2, h3 {
    margin-top: 20px;
    margin-bottom: 10px;
}

So the whitestripe is caused by the margin-top on the h1 element.

CodePudding user response：

Add custom CSS style...

<html lang="en">

<head>
  <title>MUI CSS Appbar Example</title>

  <style>
    h1 {
      margin-top: 0px!important;
    }
  </style>

  <link href="https://cdn.muicss.com/mui-0.10.3/css/mui.min.css" rel="stylesheet" type="text/css" />
  <script src="https://cdn.muicss.com/mui-0.10.3/js/mui.min.js"></script>

</head>

<body>
  <div >
    <h1>Appbar</h1>
  </div>
</body>

</html>