wp-calypso/apps/wpcom-block-editor/src/wpcom/features/live-preview/index.scss

.components-notice:has(.wpcom-live-preview-action) {
	.components-notice__content {
		display: flex;
		align-items: center;
		margin-right: 0;

		.components-notice__actions {
			margin-left: auto;

			.components-notice__action {
				margin-top: 0;
				white-space: nowrap;
			}
		}
	}
}

.wpcom-live-preview-sidebar-notice-container {
	padding: 24px 24px 0;
	border-top: 1px solid #2f2f2f;

	// Hide the original border only when the notice is present.
	+ .edit-site-save-hub {
		border-top: none;
		padding-top: 0;
	}

	.wpcom-live-preview-sidebar-notice {
		margin: 0 0 24px;
		color: var(--color-text);

		.components-notice__content {
			margin-right: 0;
		}

		.components-notice__action {
			margin: 8px 0 0;
		}
	}
}