Code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head> <title>细表格原理</title> <style type="text/css">
.tbl{}{ background-color:Red;}/**//*表格的背景色，即细表格的细线颜色*/ .tr_bg{}{background-color:#fff;}/**//*行背景色盖住表格背景色，只留下cellspacing*/
</style></head><body><table cellpadding="5" cellspacing="1" class="tbl"><!--cellspacing即线宽--> <tr class="tr_bg"> <td>hi</td> <td>hi</td> </tr> <tr class="tr_bg"> <td>hi</td> <td>hi</td> </tr></table></body></html>