文物蒙层背景色调整

code/src/components/showCollection/index.vue

@@ -50,7 +50,7 @@ export default {
     z-index: 99999;
     top: 0;
     left: 0;
-    background: rgba(48, 48, 48, 0.8);
+    background: linear-gradient(180deg, #595959 0%, #8A8A8A 100%);
   }
 }
 </style>