woocommerce/plugins/woocommerce-blocks/assets/js/blocks/product-search/style.scss

.wc-block-product-search {
	.wc-block-product-search__fields {
		display: flex;
	}
	.wc-block-product-search__field {
		padding: 6px 8px;
		line-height: 1.8;
		flex-grow: 1;
	}
	.wc-block-product-search__button {
		display: flex;
		align-items: center;
		margin: 0 0 0 6px;
		cursor: pointer;
		padding: 0 0.5em;
		position: relative;
		overflow: hidden;
		svg {
			fill: currentColor;
			outline: none;
			.rtl & {
				transform: rotate(180deg);
			}
		}
		&:active {
			color: currentColor;
		}
		&:disabled,
		&[aria-disabled="true"] {
			cursor: default;
			opacity: 0.3;
		}
		&[aria-disabled="true"]:focus,
		&:disabled:focus {
			box-shadow: none;
		}
	}
}