Please use this CSS to center logo on mobile
@media (max-width:1023px) {
.logo_link {
position: absolute!important;
width: 100%!important;
text-align: center!important;
display: block!important;
top: 0!important;
right: 50px!important;
padding-left: 100px!important;
}
}
In this article you can find information how to add custom CSS to any WordPress Theme: How to add CSS code that is future update compatible