style: 样式修改

src/page-instrument/simple-detail/index.module.less

@@ -20,7 +20,7 @@ body {
     overflow: hidden;
     --header-height: 62px;
     // background: var(--container-background);
-    background: transparent;
+    background: brown;
     position: relative;
     .mask{
         position: absolute;