The managed objects created by the provider contain similar auto-enlistment code as the JDBC wrapper added by the container-supplied connection pool manager.

提供者创建的受管对象包含与 JDBC 包装器（由容器提供的连接池管理器添加）相似的自动征用代码。

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When working with a fixed width design, be sure to at least center the wrapper div to maintain a sense of balance (margin: 0 auto; usually does the trick).

如果要使用固定宽度设计，务必保证主容器居中对齐，以保持平衡(一般利用margin： 0 auto；就可以了)。

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