How can we optimize the website as per google most recent Mobile First Index update?

Make your website mobile friendly.

No need to put a lot of graphic on website, try the simple one.

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At first, make your website responsive for all devices.

5 steps to optimizing your site for Google’s mobile-first index

1. Speed
2. Don’t block CSS, JavaScript or images
3. Mobile design
4. On-page optimization
5. Local optimization

Please tell me about this update....