Hello,
1. You can find the switcher in Mobile menu.
2. Here is custom css:
@media (max-width: 480px){
.header .shopping-cart-widget .cart-summ span {
font-size: 11px;
margin-left: 3px;
}
.shopping-cart-widget .cart-summ > .cart-bag {
margin-right: 0px;
}
}
Regards