.login {
	display: grid;
	gap: 1em;
	grid-template-columns: auto auto;
	max-width: 480px;
}

.login label {
	margin-top: 5px;
}

.login input[type="checkbox"] {
	float: left;
	margin: auto auto auto 0;
}

#usr:required, #pwd:required, #pwdRpt:required {
background-color: gold;
}

#usr:required:valid, #pwd:required:valid, #pwdRpt:required:valid {
background-color: transparent;
}