Baskerville 2 footer from vertical to horizontal

Hello there,

I am a complete website/WordPress newbie and would like to set up my very first website concerning the 86 outlying territories of the world (in German).

Due to its isotope/masonry style I selected the Baskerville 2 theme and the Elementor editor.

Does anyone know how to set the footer in this theme from vertical to horizontal?

I already tried several additional CSS codes but they obviously do not work …

E. g.:

.menu-imperial-database-footer-container li {
    display: inline-block;
    margin-left: 10px;
}

.menu-imperial-database-footer-container li:first-child {
    margin-left: 0;
}

footer-widgets .widget.widget_nav_menu li {
	display: inline-block;
	float: none;
	margin-right: 16px;
}

.footer-widgets .widget_nav_menu li {
    display: inline-block;
}

Many thanks for your kind reply.

Sebastian