WEB-721 fix:footer responsiveness on mobile devices and small screens (#3150)

src/app/shared/footer/footer.component.scss

@@ -113,7 +113,7 @@
 }
 
 // ===== Responsive for Compact Mode =====
-@media (width <= 480px) {
+@media (width <=480px) {
   .footer-compact {
     font-size: 0.7rem;
 
@@ -126,3 +126,16 @@
     }
   }
 }
+
+// ===== Responsive for Default Mode (Shell) =====
+@media (width <=599px) {
+  #footer {
+    min-width: 100%;
+  }
+
+  .main-page {
+    max-width: 100%;
+    min-width: 100%;
+    padding-left: 2%;
+  }
+}