效果非常不错的登录页面模板，输入框获取焦点后会自动隐藏默认文本，如果为空会提示必填字段 ，经测试，效果相当不错，感兴趣的朋友可以参考下哈。-The effect is very good landing page template, enter the box to get the focus automatically hide the default text, if it is empty will prompt the required fields, has been tested,