feat:调整二级页面的样式

src/core/page.less

@@ -13,12 +13,13 @@
   -moz-osx-font-smoothing: grayscale;
   .page {
     position: fixed;
-    top: 50px;
+    top: 60px;
     left: 180px;
     right: 0;
     bottom: 0;
     z-index: 102;
     overflow: auto;
+    margin:0 16px;
     .box{
       &:first-child{
         margin-bottom: 8px;

src/modules/plan-manage/LearningData.less

@@ -7,7 +7,7 @@
         font-weight:normal;
     }
     .plan-info{
-        margin:16px;
+        margin-bottom:8px;
         padding:16px;
         background: #FFF;
         display:flex;