data-native-menu='false' - Custom pop-up width?

data-native-menu='false' - Custom pop-up width?

The popup that is created for <select> elements using data-native-menu='false' is cutting off the text of my options. Does anyone know how I can customize the width of this popup? If possible, I'd prefer that it size itself based on the length of the longest option, unless it reaches the fullscreen width, in which case it could then clip the text.

Thoughts/suggestions?