Hi,
copy the class or id name of that element. Go to editor page of wordpress.
press ctrl+F. you will see a search field on the top of the page. paste
your id or class name. you will see highlighted that line on style.css file.
Thanks
Andrew Nevins
(@anevins)
WCLDN 2018 Contributor | Volunteer support
If you’re not using a Child Theme, and if the theme doesn’t have a designated section of the dashboard for CSS modifications then install this Custom CSS Manager plugin http://wordpress.org/plugins/custom-css-manager-plugin
Then use its “CSS Code” section of the dashboard to hold your CSS modifications.
Alternatively use your Child Theme style.css file to hold your CSS modifications.
Copy the CSS you’re using when you Inspect Element and paste it into your Custom CSS or Child Theme style.css file.