fix(device-health-check): reduce width for card per row stage

src/pages/DeviceHealthCheck/deviceHealthCheck.module.css

@@ -5,7 +5,7 @@
   width: 100%;
 }
 
-@media (max-width: 900px) {
+@media (max-width: 600px) {
   .cards-container {
     grid-template-columns: repeat(1, 1fr);
   }