两列等高、三列等高
css代码.qgroup_main{ position:relative;}.qgroup_main_inner{overflow:hidden; zoom:1; padding-bottom:10px;}.qgroup_main_left{float:left; width:180px; margin-bottom:-30000px;padding-bottom:30000px; background:#ccc; border:1px solid #f00;}.qgroup_main_right{float:right;width:170px; margin-bottom:-30000px;padding-bottom:30000px; background:#ccc; border:1px solid #f00;}.qgroup_main_mid{ margin:0 175px 0 185px; margin-bottom:-30000px;padding-bottom:30000px; background:#ccc; border:1px solid #f00;}.qgroup_main_left_bot{font-size:0;line-height:0;height:1px;background:#f00; overflow:hidden;float:left; width:182px;}.qgroup_main_right_bot{font-size:0;line-height:0;height:1px;background:#f00; overflow:hidden;float:right;width:172px; }.qgroup_main_mid_bot{font-size:0;line-height:0;height:1px;background:#f00; overflow:hidden;margin:0 175px 0 185px;_margin:0 172px 0 182px;}??
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