fix chats, boost popover's z-index some more

src/components/chat/chat.scss

@@ -108,47 +108,4 @@
       }
     }
   }
-
-  @media all and (max-width: 800px) {
-    height: 100%;
-    overflow: hidden;
-
-    .chat-view-inner {
-      overflow: hidden;
-      height: 100%;
-      margin-top: 0;
-      margin-left: 0;
-      margin-right: 0;
-    }
-
-    .chat-view-body {
-      display: flex;
-      min-height: auto;
-      overflow: hidden;
-      height: 100%;
-      margin: 0;
-      border-radius: 0;
-    }
-
-    .chat-view-heading {
-      box-sizing: border-box;
-      position: static;
-      top: 0;
-      margin-top: 0;
-      border-radius: 0;
-      height: 50px;
-    }
-
-    .scrollable-message-list {
-      display: unset;
-      overflow-y: scroll;
-      overflow-x: hidden;
-      -webkit-overflow-scrolling: touch;
-    }
-
-    .footer {
-      position: sticky;
-      bottom: auto;
-    }
-  }
 }

src/components/popover/popover.vue

@@ -37,7 +37,7 @@
 }
 
 .popover {
-  z-index: 90;
+  z-index: 500;
   position: absolute;
   min-width: 0;
 }