Responsive tip calculator with CSS and JS;

Hey all, I had fun building this project. Javascript was obviously the fun part in this app. At times i had problems writing the logic behind this tip app, but managed to somehow make it work overall. Sometimes i overthinked the solution which made things worse. There are a lot of things i still would change and will still do after submitting this project. I will go through other solutions, to see how i could improve my apps functionality.

My question to community would be:

1. HTML

• what would be the best way of doing the % buttons? In my case, i chose button elements. I assume this could be also done with input element as type=''button''.

2. JS

• the whole app is basically made using if/else statements. What logic would you choose to implement in this app?