outgoing email addresses are barely viewable b/c “to”, “cc” and “bcc” bars are too thin.

outgoing email addresses are barely viewable b/c “to”, “cc” and “bcc” bars are too thin.

Is there any way to make the area larger for “to”, “cc” and “bcc” in an outgoing email? - if i send an email to several people in one email I am unable to see if all the recipients are listed unless i scroll horizontally.
Moreover, the space is so thin that I have to guess who the recipient is because only the top portion of the email address is visible in the “to”, “cc” and “bcc” bar.