建议设置成font-family: 'helvetica neue','hiragino sans gb','stheiti','microsoft yahei','\5FAE\8F6F\96C5\9ED1',tahoma,sans-serif;以保证同时兼容mac和windows。
测试示例：
<h2 style="font-size:28px;font-family:'helvetica neue'">这是标题字体测试示例</h2>
<h2 style="font-size:28px;font-family:'hiragino sans gb'">这是标题字体测试示例</h2>
<h2 style="font-size:28px;font-family:'stheiti'">这是标题字体测试示例</h2>
<h2 style="font-size:28px;font-family:'microsoft yahei'">这是标题字体测试示例</h2>
<h2 style="font-size:28px;font-family:'\5FAE\8F6F\96C5\9ED1'">这是标题字体测试示例</h2>
<h2 style="font-size:28px;font-family:tahoma">这是标题字体测试示例</h2>
<h2 style="font-size:28px;font-family:sans-serif">这是标题字体测试示例</h2>
实际效果