Making site description on one line

Hello! I am setting up my first ever WP blog, in Weaver theme. I have read the tutorials and searched the forums but struck out on this one issue.

I want to make the site description on one line, but it keeps wrapping. You can see my blog at https://www.survivalfictionblog.com.

This is the code I have added into the Header section in the Advanced Options:

/[CSS moderated as per the Forum Rules. Please just post a link to your site.]

This is code to move the title to the right and description to the left, and to change the description font size.

However, I just can’t seem to find a snippet that will make the description stay on one line. I know it’s somewhere in the CSS style code but I can’t find it or edit it in there anyway. I am on a Mac running Firefox, but it looks the same in Safari and Netscape. Not sure what other info is required.

This is my first forum post, so I would sure appreciate any help someone could offer. If I have posted in the wrong place or in the wrong format, please let me know and I will modify my request.

Thanks for all your help!