body { border:1px solid #D5D5D5;background:#F6F7F7;font-family:宋体,Arial;font-size:18px; line-height: 1.8em; z-index: 0; margin-right: auto;margin-left: auto; min-width: 100#;

max-width: 2500% ;margin-left: auto; margin-right: auto; position: relative;}