-webkit: Indicates support for safari browsers.
transform: rotate the div element.
scale: zoom, refers to "zoom out" and "zoom in".
Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
h3{
font-size:7px;
-webkit-transform:scale(0.7);
display:block;
}
</style>
</head>
<body>
<h3>如何让Chrome支持小于12px的文字? - 7px</h3>
</body>
</html>
Effect: