Hello,
1. Edit page > [8theme] Layout options > Breadcrumbs Style > Disable.
2. Please add this code in Theme Options > Styling > Custom css
.woocommerce-checkout .select2-results {
background-color: black;
}
.woocommerce-checkout .select2-container--default .select2-selection--single .select2-selection__rendered {
color: black;
}
.woocommerce-checkout .select2-container--default .select2-results__option[data-selected=true] {
background-color: #ffb4577a;
}
3. Theme Options > General > Mobile Header Settings > Mobile header text color > White.
Regards