diff --git a/css/mobile-first.css b/css/mobile-first.css
index a98161c0..aa08f9e6 100644
--- a/css/mobile-first.css
+++ b/css/mobile-first.css
@@ -505,7 +505,7 @@ table.why_us_table {   width: 1140px !important;
     margin-top: 10px;}
    
 /*文中广告*/
-.info_ad { position: relative; margin: 0 5px 20px 5px;}
+.info_ad { position: relative; margin: 0 5px 10px 5px;}
 .info_ad_button {
     background: #fff;
     border-radius: 50%;