diff --git a/src/assets/styles/portal.scss b/src/assets/styles/portal.scss
index 612a05d9..86422dd6 100644
--- a/src/assets/styles/portal.scss
+++ b/src/assets/styles/portal.scss
@@ -331,7 +331,7 @@ body {margin: 0px;padding: 0px;}
     padding:20px;
     margin-right: 20px;
     .course-image-box {
-      width: 200px;
+      width: 100%;
       height: 114px;
     }
   }
@@ -383,7 +383,7 @@ body {margin: 0px;padding: 0px;}
     padding:25px;
     margin-right: 25px;
     .course-image-box {
-      width: 320px;
+      width: 100%;
       height: 180px;
     }
   }