How can I increase size of Branding in Mobile? sonora 7.0

Site URL: https://iliafrancis.com/home

Hi, couldnt find this question which it might be answer but cant figure how to increase the size of the logo in mobile in this template, also remove the withe banner behind that only appears in mobile 

To increase logo size on mobile, add this to Design > Custom CSS

/* Logo size */
@media screen and (max-width:640px) {
.Mobile-bar-branding-logo {
    width: 200px;
}
}