Selecting my date of birth

What I was trying to do:

Selecting my date of birth

What I expected to happen:

scroll the years, the months, and the days

What actually happened:

while scrolling, the screen decrease and I do not see the date of birth anymore. We also have problem on the web with this functionality as when I scroll with my mouse, everytying change by 3 data point from one click decreasing. I simply propose to change how we get the date.