woocommerce/plugins/woocommerce-admin/client/navigation/style.scss

@import './stylesheets/variables';
@import './components/container/style';
@import './components/header/style';

.woocommerce-navigation {
	position: relative;
	width: $navigation-width;
	box-sizing: border-box;
	background-color: $gray-900;
	z-index: 1100; //Must be greater than z-index on .woocommerce-layout__header

	@media ( max-width: 960px ) {
		width: $header-height;
		height: $header-height;
	}

	.components-navigation {
		box-sizing: border-box;
	}
}

.woocommerce-navigation__wrapper {
	background-color: $gray-900;
	position: absolute;
	top: $header-height;
	width: 100%;
	height: calc(100vh - #{$header-height + $adminbar-height});
	overflow-y: auto;
}

.is-wp-toolbar-disabled .woocommerce-navigation__wrapper {
	height: calc(100vh - #{$header-height});
}

body.is-wc-nav-expanded {
	.woocommerce-navigation {
		width: $navigation-width;
		height: 100%;
	}
}

body.is-wc-nav-folded {
	.woocommerce-navigation {
		width: $header-height;
		height: $header-height;
		overflow: hidden;

		.woocommerce-navigation-header {
			> * {
				display: none;
			}
		}

		.woocommerce-navigation-header__site-icon {
			display: block;
		}

		.components-navigation {
			display: none;
		}
	}

	.woocommerce-transient-notices {
		left: $gap;
	}

	#wpbody {
		padding-left: 0;
	}
}

.has-woocommerce-navigation {
	#adminmenuwrap,
	#adminmenuback {
		display: none !important;
	}

	&.woocommerce_page_wc-settings,
	&.woocommerce_page_wc-status {
		.woo-nav-tab-wrapper {
			display: none;
		}

		.woocommerce .subsubsub {
			font-size: 14px;
			margin: 5px 0;
		}
	}

	#wpcontent,
	#wpfooter {
		margin-left: 0;

		@media ( max-width: 960px ) {
			margin-left: 0;
		}
	}

	#wpbody {
		padding-left: $navigation-width;

		@media ( max-width: 960px ) {
			padding-left: 0;
		}
	}

	.woocommerce-layout__header.is-embed-loading {
		&::before {
			content: '';
			position: fixed;
			width: $navigation-width;
			height: 100%;
			background: $gray-900;

			@include breakpoint( '<960px' ) {
				width: $header-height;
				height: $header-height;
			}
		}
	}

	#woocommerce-embedded-root.is-embed-loading {
		margin-bottom: -$adminbar-height;
	}

	&:not(.is-wp-toolbar-disabled) {
		#wpbody-content {
			margin-top: $adminbar-height;
		}
	}
}