style: adjust styles

src/styles/adaptedStyles/notificationsPage.scss

@@ -5,10 +5,24 @@
     margin-top: 0;
     padding-top: 70px;
     height: calc(100vh - 70px);
+
+    &::after {
+      content: '';
+      top: 0;
+      left: 0;
+      position: absolute;
+      width: 100%;
+      height: 100%;
+      background: url(https://s1.hdslb.com/bfs/static/blive/blfe-message-web/static/img/infocenterbg.a1a0d152.jpg)
+        top/cover no-repeat fixed;
+      opacity: 0.3;
+    }
   }
 }
 
 #link-message-container {
+  z-index: 1;
+
   .space-left {
     .item:hover a,
     .item.active a,

src/styles/main.scss

@@ -36,6 +36,7 @@ body {
   min-width: unset !important;
   filter: none !important;
   background-color: var(--bew-bg);
+  background-image: none;
   color: var(--bew-text-1);
 }