Windows 新版本的idea可能是:
File菜单->Settings->Appearance & Behavior->Appearance->Use custom font
选择: Dialog 或者 DialogInpult, size=12
File菜单->Settings->Editor-> Colors Scheme-> Font
选择：DialogInput，size=12， Line spacing: .0
Windows 旧版本的idea可能是:
File菜单->Settings->
Colors & Fonts->Editor Font=dialog, size=12, line spacing =1.0
File菜单->Settings->
Appearance-> Font Name=，size=12