How can I show the select options at the bottom of the screen on a mobile device?

I have a number input and a select input next to it like the image attached When I focus on the input[type=number][inputmode=decimal] , it works correctly where my number keyboard pops up however, when I move to the select options, the keyboard goes away and it is only focused upon. I want to allow the user to keep their hands at the bottom of screen and select an options like option 1 and 5 here in this website http://uipatterns.io/single-value-selection/select And then once they select an input, allow them to navigate to the next input field How can I do that?

UI Patterns

Single value selection | UIPatterns.io

Explore the Single value selection mobile design pattern. Find solutions to the following problem: The user needs to pick a single value from a list of available options.