<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" > < meta http-equiv ="Content-Type" content ="text/html; charset=gb2312" /> < style type ="text/css" > ... <!-- div {...}{ height:30px; line-height:30px; border:1px solid red }--> </ style > < div > web标准常见问题大全 </ div > 给容器设置一个与其高度相同的行高就可以了