chore: did some css stuff on nprogress

src/App.vue

@@ -48,6 +48,7 @@ export default {
 
 // 设置进度条颜色
 #nprogress .bar {
-  background: lighten($--color-primary, 80%) !important; //自定义颜色
+  background: lighten($--color-primary, 25%) !important; //自定义颜色
+  height: 3px !important;
 }
 </style>