diff --git a/src/app.vue b/src/app.vue
index 9d1f10d..04888c4 100644
--- a/src/app.vue
+++ b/src/app.vue
@@ -1,6 +1,12 @@
 <script setup lang="ts">
 import { socket } from 'libs/socket'
 
+import { onMounted } from 'vue'
+
+onMounted(() => {
+  document.body.style.setProperty('--el-color-primary', '#1989fa')
+})
+
 socket.init(() => {}, 'app')
 </script>
 
diff --git a/src/assets/styles/main.scss b/src/assets/styles/main.scss
index 6625593..04de84d 100644
--- a/src/assets/styles/main.scss
+++ b/src/assets/styles/main.scss
@@ -7,6 +7,3 @@ $info-color: #909399;
 @use './common.scss';
 @use './element.scss';
 
-.mt-20 {
-  margin-top: 20px;
-}