update

src/views/live/student/group.vue

@@ -503,7 +503,7 @@ $live-bc: #3d3938;
         overflow: auto;
 
         .group-box {
-          width: 255px;
+          width: 254px;
           height: 144px;
           margin: 8px;
 

src/views/live/teacher/group.vue

@@ -496,7 +496,7 @@ $live-bc: #3d3938;
         overflow: auto;
 
         .group-box {
-          width: 256px;
+          width: 254px;
           height: 144px;
           margin: 8px;