Improve the site

I have a website, where you need to implement this calculation: https://app-numerology.firebaseapp.com/

- the site is made in the constructor Tinkoff - the input of the date of birth should be in one field, and not in three- dots in the date of birth should be arranged automatically - it should be possible to copy numbers to the clipboard in this format: 1111/2222 / /44 / / / 6 / / / 99 Emergency 6- the calculation should be carried out both by button and by pressing enter- the calculation should occur directly on the page of the site, without additional windows