.woocommerce-checkout .xsu-tr-location-field select,
.woocommerce-account .xsu-tr-location-field select {
    width: 100%;
}

.woocommerce-checkout .xsu-tr-location-field .select2-container,
.woocommerce-account .xsu-tr-location-field .select2-container {
    width: 100% !important;
}