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The user will input the Days / Hours / Minutes.
Should it be 3 sliders, or 3 input fields, or something else?
The design is on on desktop and tablet.
I'd like to suggest this kind of selection. in the desktop mode it's easy to click and type as well as tablet mode it's easy to tap and select numbers. and I've put 5x to the minutes for more user-friendliness.
Required, but never shown