diff --git a/app/views/layouts/base_homework.html.erb b/app/views/layouts/base_homework.html.erb
index b583fcad6..f1840c2fd 100644
--- a/app/views/layouts/base_homework.html.erb
+++ b/app/views/layouts/base_homework.html.erb
@@ -31,6 +31,7 @@
               text-align: center;
               padding-left: 5px !important;
               padding-right: 5px !important;
+              line-height: 1.9;
           }
           .span_wping a:hover{ background-color:#03a1b3;}
         </style>
diff --git a/public/stylesheets/css.css b/public/stylesheets/css.css
index 444d0d383..d53b6ec02 100644
--- a/public/stylesheets/css.css
+++ b/public/stylesheets/css.css
@@ -1,5 +1,5 @@
 /* CSS Document */
-body{ font-size:12px !important; font-family:"微软雅黑","宋体" !important; line-height:1.9; background:#fff; font-style:normal;}
+#content{ font-size:12px !important; font-family:"微软雅黑","宋体" !important; line-height:1.9; background:#fff; font-style:normal;}
 div,html,img,ul,li,p,body,h1,h2,h3,h4,p,a,table,tr,td,fieldset,input,span,textarea{ margin:0; padding:0;}
 div,img,tr,td,textarea{ border:0;}
 table,tr,td{border:0; cellspacing:0; cellpadding:0;}