#billing_email[valid-email="1"] {
	border: 2px solid #28a745;
}
#billing_email[valid-email="0"] {
	border: 2px solid #dc3545;
}

body input#billing_email[valid-email="1"]:focus,
body input#billing_email[valid-email="0"]:focus {
	box-shadow: none;
}