<!DOCTYPE html>

<html>
<head>
    <style>
        body {
            height: 2000px;
            margin: 0;
        }
        
        .sticky-container {
            border: 1px solid black;
            height: 400px;
            width: 80%;
            margin-top: -10px;
        }

        .sticky {
            position: relative;
            top: 0px;
            height: 200px;
            width: 100%;
            background-color: green;
        }
    </style>
    <script>
        window.addEventListener('load', () => {
            internals.unconstrainedScrollTo(document.scrollingElement, 0, -10);
        }, false);
    </script>
</head>
<body>

<div class="sticky-container">
    <div class="sticky"></div>    
</div>

</body>
</html>