diff --git a/src/vs/workbench/api/browser/viewsExtensionPoint.ts b/src/vs/workbench/api/browser/viewsExtensionPoint.ts
index 6ab333bf1e4..fbffb5d002f 100644
--- a/src/vs/workbench/api/browser/viewsExtensionPoint.ts
+++ b/src/vs/workbench/api/browser/viewsExtensionPoint.ts
@@ -326,7 +326,7 @@ class ViewsExtensionHandler implements IWorkbenchContribution {
 			);
 
 			// Generate CSS to show the icon in the activity bar
-			const iconClass = `.monaco-workbench > .activitybar .monaco-action-bar .action-label.${cssClass}`;
+			const iconClass = `.monaco-workbench .activitybar .monaco-action-bar .action-label.${cssClass}`;
 			createCSSRule(iconClass, `-webkit-mask: url('${icon}') no-repeat 50% 50%`);
 		}
 
diff --git a/src/vs/workbench/browser/parts/activitybar/activitybarActions.ts b/src/vs/workbench/browser/parts/activitybar/activitybarActions.ts
index 2fe84cf2ba5..2144bb90f7e 100644
--- a/src/vs/workbench/browser/parts/activitybar/activitybarActions.ts
+++ b/src/vs/workbench/browser/parts/activitybar/activitybarActions.ts
@@ -175,7 +175,7 @@ export class PlaceHolderViewletActivityAction extends ViewletActivityAction {
 	) {
 		super({ id, name: id, cssClass: `extensionViewlet-placeholder-${id.replace(/\./g, '-')}` }, viewletService, partService, telemetryService);
 
-		const iconClass = `.monaco-workbench > .activitybar .monaco-action-bar .action-label.${this.class}`; // Generate Placeholder CSS to show the icon in the activity bar
+		const iconClass = `.monaco-workbench .activitybar .monaco-action-bar .action-label.${this.class}`; // Generate Placeholder CSS to show the icon in the activity bar
 		DOM.createCSSRule(iconClass, `-webkit-mask: url('${iconUrl || ''}') no-repeat 50% 50%`);
 	}
 
@@ -271,9 +271,9 @@ registerThemingParticipant((theme: ITheme, collector: ICssStyleCollector) => {
 	const activeForegroundColor = theme.getColor(ACTIVITY_BAR_FOREGROUND);
 	if (activeForegroundColor) {
 		collector.addRule(`
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.active .action-label,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:focus .action-label,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:hover .action-label {
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.active .action-label,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item:focus .action-label,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item:hover .action-label {
 				background-color: ${activeForegroundColor} !important;
 			}
 		`);
@@ -283,7 +283,7 @@ registerThemingParticipant((theme: ITheme, collector: ICssStyleCollector) => {
 	const outline = theme.getColor(activeContrastBorder);
 	if (outline) {
 		collector.addRule(`
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:before {
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item:before {
 				content: "";
 				position: absolute;
 				top: 9px;
@@ -292,26 +292,26 @@ registerThemingParticipant((theme: ITheme, collector: ICssStyleCollector) => {
 				width: 32px;
 			}
 
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.active:before,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.active:hover:before,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.checked:before,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.checked:hover:before {
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.active:before,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.active:hover:before,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.checked:before,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.checked:hover:before {
 				outline: 1px solid;
 			}
 
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:hover:before {
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item:hover:before {
 				outline: 1px dashed;
 			}
 
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:focus:before {
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item:focus:before {
 				border-left-color: ${outline};
 			}
 
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.active:before,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.active:hover:before,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.checked:before,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.checked:hover:before,
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:hover:before {
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.active:before,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.active:hover:before,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.checked:before,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item.checked:hover:before,
+			.monaco-workbench .activitybar > .content .monaco-action-bar .action-item:hover:before {
 				outline-color: ${outline};
 			}
 		`);
@@ -322,7 +322,7 @@ registerThemingParticipant((theme: ITheme, collector: ICssStyleCollector) => {
 		const focusBorderColor = theme.getColor(focusBorder);
 		if (focusBorderColor) {
 			collector.addRule(`
-					.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:focus:before {
+					.monaco-workbench .activitybar > .content .monaco-action-bar .action-item:focus:before {
 						border-left-color: ${focusBorderColor};
 					}
 				`);
diff --git a/src/vs/workbench/browser/parts/editor/media/notabstitlecontrol.css b/src/vs/workbench/browser/parts/editor/media/notabstitlecontrol.css
index 066987b790b..1190f855b69 100644
--- a/src/vs/workbench/browser/parts/editor/media/notabstitlecontrol.css
+++ b/src/vs/workbench/browser/parts/editor/media/notabstitlecontrol.css
@@ -54,7 +54,7 @@
 	background-image: none;
 }
 
-.windows > .monaco-workbench > .part.editor > .content .editor-group-container > .title.breadcrumbs .breadcrumbs-control .monaco-breadcrumb-item::before  {
+.windows > .monaco-workbench .part.editor > .content .editor-group-container > .title.breadcrumbs .breadcrumbs-control .monaco-breadcrumb-item::before  {
 	content: '\\';
 }
 
diff --git a/src/vs/workbench/parts/debug/browser/media/debugViewlet.css b/src/vs/workbench/parts/debug/browser/media/debugViewlet.css
index 7cf772fb7b0..9d27545f44b 100644
--- a/src/vs/workbench/parts/debug/browser/media/debugViewlet.css
+++ b/src/vs/workbench/parts/debug/browser/media/debugViewlet.css
@@ -64,7 +64,7 @@
 	margin-top: 7px;
 }
 
-.mac > .monaco-workbench > .part > .title > .title-actions .start-debug-action-item {
+.mac > .monaco-workbench .part > .title > .title-actions .start-debug-action-item {
 	border-radius: 4px;
 }
 
diff --git a/src/vs/workbench/parts/welcome/page/electron-browser/welcomePage.css b/src/vs/workbench/parts/welcome/page/electron-browser/welcomePage.css
index 75a18c03da3..a24da657f52 100644
--- a/src/vs/workbench/parts/welcome/page/electron-browser/welcomePage.css
+++ b/src/vs/workbench/parts/welcome/page/electron-browser/welcomePage.css
@@ -228,21 +228,21 @@
 .monaco-workbench .part.editor > .content .welcomePage .linux-only {
 	display: none;
 }
-.mac > .monaco-workbench > .part.editor > .content .welcomePage .mac-only {
+.mac > .monaco-workbench .part.editor > .content .welcomePage .mac-only {
 	display: initial;
 }
-.windows > .monaco-workbench > .part.editor > .content .welcomePage .windows-only {
+.windows > .monaco-workbench .part.editor > .content .welcomePage .windows-only {
 	display: initial;
 }
-.linux > .monaco-workbench > .part.editor > .content .welcomePage .linux-only {
+.linux > .monaco-workbench .part.editor > .content .welcomePage .linux-only {
 	display: initial;
 }
-.mac > .monaco-workbench > .part.editor > .content .welcomePage li.mac-only {
+.mac > .monaco-workbench .part.editor > .content .welcomePage li.mac-only {
 	display: list-item;
 }
-.windows > .monaco-workbench > .part.editor > .content .welcomePage li.windows-only {
+.windows > .monaco-workbench .part.editor > .content .welcomePage li.windows-only {
 	display: list-item;
 }
-.linux > .monaco-workbench > .part.editor > .content .welcomePage li.linux-only {
+.linux > .monaco-workbench .part.editor > .content .welcomePage li.linux-only {
 	display: list-item;
 }
diff --git a/src/vs/workbench/parts/welcome/walkThrough/electron-browser/walkThroughPart.css b/src/vs/workbench/parts/welcome/walkThrough/electron-browser/walkThroughPart.css
index c83ac377cae..2194a2a98c7 100644
--- a/src/vs/workbench/parts/welcome/walkThrough/electron-browser/walkThroughPart.css
+++ b/src/vs/workbench/parts/welcome/walkThrough/electron-browser/walkThroughPart.css
@@ -123,13 +123,13 @@
 .monaco-workbench .part.editor > .content .walkThroughContent .linux-only {
 	display: none;
 }
-.mac > .monaco-workbench > .part.editor > .content .walkThroughContent .mac-only {
+.mac > .monaco-workbench .part.editor > .content .walkThroughContent .mac-only {
 	display: initial;
 }
-.windows > .monaco-workbench > .part.editor > .content .walkThroughContent .windows-only {
+.windows > .monaco-workbench .part.editor > .content .walkThroughContent .windows-only {
 	display: initial;
 }
-.linux > .monaco-workbench > .part.editor > .content .walkThroughContent .linux-only {
+.linux > .monaco-workbench .part.editor > .content .walkThroughContent .linux-only {
 	display: initial;
 }