Hello,
I would like to remove or change the logo background color in mobile (responsive) version, but I don't find the correct option; how can I do it?
For example in the attacched file I would like to remove or make trasparent the black background under the logo.

Thanks.

Live Url please

www.usiecostumi.org/

Thanks!

Add this code to your css/custom.css

@media screen and (max-width: 768px) {
.jp-menu-outer { background-color: #fff;}
}

Thanks, I add your code to css/custom.css, but I don't see any changes....

Your css/custom.css is empty!!
view-source:https://www.usiecostumi.org/templates/jp-ultimate/css/custom.css

www.joomlaplates.com/support/documentation/custom-css-in-joomla