Hi Mike,

thank you very much for the fast reply! It works well!
I added three parameters to change the line height as well as the font size. It looks okay, but maybe you could double check it :)

@media only screen and (min-width: 767px) { 
#socket .sub_menu_socket {
    float: none !important;
}
#socket .sub_menu_socket ul {
    text-align: center;
    margin-bottom: 6px;
    font-size: 14px;
}
#socket .sub_menu_socket li {
    float: none !important;
    display: inline;
}
}

@media only screen and (max-width: 766px) { 
#socket .sub_menu_socket li {
    float: left !important; 
    display: block !important; 
    width: 100% !important; 
    text-align: left !important; 
    font-size: 14px;
    line-height: 1.5;
}
}

Best regards and thanks
Max

Edit: Should I save this CSS addition in a separate file in the child theme or is it sufficient to place it in the “Quick CSS” area?