Hello jayso133
John7022 here. He is right and I keep forgetting to remind people of doing that. i am new to the forum and sometimes I take other peoples knowledge for granted.
It is not really hard to create a child theme most of the work is already done for you. There are several good tutorials on the internet for creating child themes. Just google for one.
If you don’t want to create a child theme then get the custom CSS plugin as esmi mentions, but if you have to edit your main files I strongly suggest that you create a child theme and backup everything before you start, that way you will have a copy of your starting point.
Sorry, I forgot about the child theme. I work with them most of the time and take them for granted, thinking everybody uses them.
thank You
John7022
P.S.
If I remember right that little bit of code goes into your css file and on line one or there abouts.