替换Html5范围样式标记的最快方法是什么：
<html>
<body>
<p>
This is My text and <span style = "color:red; font-weight:bold">this is some text</span> even more
</p>
</body>
</html>
到HTML4字体标记：
<html>
<body>
<p>
This is My text and <font color="red">this is some text</font> even more
</p>
</body>
</html>
忽略所有样式属性，只留下color。