Marker Label Size

Thanks for your useful Plugin
Is there any way to change the size of Markers? Imean the decription and title not the icon
It’s so big.I want it to be like the infowindow of google map like this

http://www.w3schools.com/googleapi/tryit.asp?filename=tryhtml_map_overlays_infowindow

Is there is any code that I can change it?

Thanks a lot

https://ww.wp.xz.cn/plugins/google-maps-builder/