<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=800">
<style>
    html { font-size: 16px; }
    body { width: 800px; margin: 0; overflow: hidden; }
</style>
</head>
<body>
    <div style="font-size:40px;"><span style="font-size:48px; color:purple;">TheFirstLineOfThisTextShouldBeInPurpleAnd</span> ShouldBeLargerThanTheRestOfTheTextAndThereShouldBeEnoughTextForTheSentenceToAutoSize. This is written without spaces so we don't have platform-specific differences in where exactly the first line cuts off.</div>
</body>
</html>