如下代码是不行的
<html><head><style type="text/css">body {font-family: 'Courier New', Courier, monospace;}</style></head><body><xmp class="table">+--------+--------+|发送者 |接收者 |+--------+--------++--------+--------+|sender |receiver|+--------+--------+</xmp></body></html>
<br />+--------+--------+ <br />|发送者 |接收者 | <br />+--------+--------+ <br /> <br />+--------+--------+ <br />|sender |receiver| <br />+--------+--------+ <br />
