[status page] improve mobile layout

src/mixins/mobile.js

@@ -3,23 +3,34 @@ export default {
     data() {
         return {
             windowWidth: window.innerWidth,
-        }
+        };
     },
 
     created() {
         window.addEventListener("resize", this.onResize);
+        this.updateBody();
     },
 
     methods: {
         onResize() {
             this.windowWidth = window.innerWidth;
+            this.updateBody();
         },
+
+        updateBody() {
+            if (this.isMobile) {
+                document.body.classList.add("mobile");
+            } else {
+                document.body.classList.remove("mobile");
+            }
+        }
+
     },
 
     computed: {
         isMobile() {
             return this.windowWidth <= 767.98;
         },
-    }
+    },
 
-}
+};