.news_box,.science_box{ width:320px; height:160px; margin-top:10px; }
.news_title,{ width:310px; padding-left:10px; height:26px; background:url(/images/title_1.gif); line-height:13px;}
.science_title{ width:310px; padding-left:10px; height:26px; background:url(/images/title_2.gif); line-height:13px;}
.news_title img,.science_title img{ margin-top:15px;}
.news_content,.science_content{ width:320px; padding-top:5px;}
.news_content ul li,.science_content ul li{ padding-left:20px; line-height:26px; background:url(/images/icon_1.gif) left 8px no-repeat; color:#484848;}
.purification_box,.pest_box{ width:598px; height:160px; margin-top:10px;}
.purification_title{ width:588px; padding-left:10px; height:26px; background:url(/images/title_2.gif); line-height:13px;}
.pest_title{ width:588px; padding-left:10px; height:26px; background:url(/images/title_3.gif); line-height:13px;}
.purification_title img,.pest_title img{ margin-top:15px;}
.purification_content,.pest_content{ width:598px; padding-top:10px;}
.purification_content img,.pest_content img{ width:296px; height:116px; border:2px solid #b8ec4b; float:left}
.purification_content ul,.pest_content ul{ width:280px; padding-left:8px; padding-top:5px; float:left;}
.purification_content ul li,.pest_content ul li{ padding-left:20px; line-height:24px; background:url(/images/icon_1.gif) left 8px no-repeat;color:#484848;}