diff --git a/src/components/codemirror.vue b/src/components/codemirror.vue
index f9c909b..ddd107e 100644
--- a/src/components/codemirror.vue
+++ b/src/components/codemirror.vue
@@ -1118,10 +1118,12 @@ export default {
     margin-top: 10px;
   }
   .result {
+    max-height: 300px;
     font-size: 18px;
     white-space: pre-wrap;
     line-height: 50px;
     color: #333;
+    overflow: auto;
   }
   .pics {
     display: flex;