<!doctype html>
<html>

<head>
    <title>MODUL - Components</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
        .mtest-header {
            position: fixed;
            top: 0;
            right: 0;
            left: 0;
            z-index: 2;
            padding: 16px 32px;
            background: #fff;
        }

        .m-flex-template__menu,
        .m-flex-template__page {
            padding-top: 52px;
        }

        .mtest-header h1 {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        @media (max-width: 767px) {
            .mtest-header {
                padding: 16px;
            }
        }
    </style>
</head>

<body class="m-u--no-margin m-u--app-body">
    <header class="mtest-header m-u--box-shadow--s">
        <h1 class="m-u--h4 m-u--no-margin-top">MODUL <i class="m-u--font-size--s m-u--no-margin-top">Components</i></h1>
    </header>
    <div id="vue">... Waiting</div>
</body>

</html>

<!doctype html>
<html>

<head>
    <title>MODUL - Components</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
        .mtest-header {
            position: fixed;
            top: 0;
            right: 0;
            left: 0;
            z-index: 2;
            padding: 16px 32px;
            background: #fff;
        }

        .m-flex-template__menu,
        .m-flex-template__page {
            padding-top: 52px;
        }

        .mtest-header h1 {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        @media (max-width: 767px) {
            .mtest-header {
                padding: 16px;
            }
        }
    </style>
</head>

<body class="m-u--app-body">
    <header class="mtest-header m-u--box-shadow--s">
        <h1 class="m-u--h4 m-u--no-margin-top">MODUL <i class="m-u--font-size--s m-u--no-margin-top">Components</i></h1>
    </header>
    <div id="vue">... Waiting</div>
</body>

</html>

Remove no-margin class on body tag
Remove no-margin class on body tag

