woocommerce/plugins/woocommerce-blocks/assets/js/blocks/checkout/password-strength-meter/style.scss

.wc-block-components-password-strength {
	&.hidden {
		opacity: 0;
	}
	.wc-block-components-password-strength__meter {
		margin: $gap-small 0 0;
		width: 100%;
		display: block;
		height: 6px;
		border-radius: 4px;
		border: 0;
		background-color: $universal-border-light;
		color: $alert-red;

		&::-webkit-meter-bar,
		&::-webkit-meter-inner-element {
			background: none;
			border: 0;
			height: 6px;
			vertical-align: middle;
		}
		&::-webkit-meter-optimum-value,
		&::-webkit-meter-even-less-good-value,
		&::-webkit-meter-suboptimum-value {
			background: none;
			background-color: currentColor;
			transition: 0.2s ease;
			border-radius: 3px;
			border: 0;
			height: 6px;
			vertical-align: middle;
		}

		&:-moz-meter-optimum::-moz-meter-bar,
		&:-moz-meter-sub-optimum::-moz-meter-bar,
		&:-moz-meter-sub-sub-optimum::-moz-meter-bar {
			background: none;
			background-color: currentColor;
			transition: 0.2s ease;
			border-radius: 3px;
			border: 0;
			height: 6px;
			vertical-align: middle;
		}
	}
	.wc-block-components-password-strength__result {
		@include font-size(smaller);
		display: block;
		text-align: right;
		margin: $gap-smallest 0 0;
		color: $alert-red;

		&::after {
			content: "\00a0 ";
		}
	}
	.wc-block-components-password-strength__meter[value="1"],
	.wc-block-components-password-strength__meter[value="1"] + .wc-block-components-password-strength__result {
		color: $alert-red;
	}
	.wc-block-components-password-strength__meter[value="2"],
	.wc-block-components-password-strength__meter[value="2"] + .wc-block-components-password-strength__result {
		color: #ff6f00;
	}
	.wc-block-components-password-strength__meter[value="3"],
	.wc-block-components-password-strength__meter[value="3"] + .wc-block-components-password-strength__result {
		color: $alert-yellow;
	}
	.wc-block-components-password-strength__meter[value="4"],
	.wc-block-components-password-strength__meter[value="4"] + .wc-block-components-password-strength__result {
		color: $alert-green;
	}
}