Accessibility issues detected by Lighthouse

Running lighthouse in devtools has revealed some issues on both pages:

City page:
![Image](https://github.com/user-attachments/assets/7800aa4e-0639-4b3b-bf4b-2e50cf4b41e3)
![Image](https://github.com/user-attachments/assets/76a57562-1d18-47e6-88d6-4da29c18e927)

Summary Page:
![Image](https://github.com/user-attachments/assets/7f881f96-7554-4b45-9208-da2c23efc83a)


