更新 'src/App.vue'

src/App.vue

@@ -167,7 +167,7 @@ const navsData = ref([
     font-weight: bold;
   }
   .r-bottom{
-    height: 100vh;
+    height: calc(100vh - 80px);
     width: 100%;
     overflow-y: auto;
     margin-top:80px;