feat: 背景图片bug修复

src/global.less

@@ -6,7 +6,7 @@ body,
   // width: 1440px;
   width: 100%;
   height: 100%;
-  background-image: url('../src/assets/bj1.jpg') !important;
+  background-image: url('../src/assets/background.png') !important;
   background-repeat: no-repeat;
   /*设置背景不重复*/
   background-size: 100% 100%;