How to change the font size of the list (not the initial view)

Question

I have set a custom font and background for the initial view of the dropdown list (Select a choice). The font-size is 20 pixels and looks great with the custom

Answer 1

I have faced the same issue. Actually its not an issue. The select menu size appears based on the list item text length. Check your option label

Ex: If you have lengthy text in the option tags then the select menu font size will be small.