<html>
<head>
</head>
<body>
<div style="border:2px solid blue; display: -webkit-flex; word-wrap: break-word; width: 50px; height:50px">
<span style="visibility:hidden">thistextshouldwrapthistextshouldwrapthistextshouldwrap</span>
</div>
</div>
</body>
</html>