increasing the size of select options - how to ?

Hello experts,

I am facing a scenario where my selection screen(with select options only) is small. I mean its around 30% only in the full screen. and this container sits at the top left corner as usual.

I used100% width and other layout properties to increase but I am not getting the things as expected.

But is there any way to increase the size of font or making them bold in web dynpro for select options.

Please advise.

Thanks in advance ,

bhaskar