diff --git a/src/vs/editor/browser/widget/diffEditorWidget2/style.css b/src/vs/editor/browser/widget/diffEditorWidget2/style.css
index 0e420e978b8..cc28c99cdb6 100644
--- a/src/vs/editor/browser/widget/diffEditorWidget2/style.css
+++ b/src/vs/editor/browser/widget/diffEditorWidget2/style.css
@@ -3,22 +3,22 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-.diff-hidden-lines-widget {
+.monaco-editor .diff-hidden-lines-widget {
 	width: 100%;
 }
 
-.diff-hidden-lines {
+.monaco-editor .diff-hidden-lines {
 	height: 0px; /* The children each have a fixed height, the transform confuses the browser */
 	transform: translate(0px, -10px);
 	font-size: 13px;
 	line-height: 14px;
 }
 
-.diff-hidden-lines:not(.dragging) .top:hover, .diff-hidden-lines:not(.dragging) .bottom:hover, .diff-hidden-lines .top.dragging, .diff-hidden-lines .bottom.dragging {
+.monaco-editor .diff-hidden-lines:not(.dragging) .top:hover, .diff-hidden-lines:not(.dragging) .bottom:hover, .diff-hidden-lines .top.dragging, .diff-hidden-lines .bottom.dragging {
 	background-color: var(--vscode-focusBorder);
 }
 
-.diff-hidden-lines .top, .diff-hidden-lines .bottom {
+.monaco-editor .diff-hidden-lines .top, .diff-hidden-lines .bottom {
 	transition: background-color 0.1s ease-out;
 	height: 4px;
 	background-color: transparent;
@@ -28,19 +28,19 @@
 	cursor: ns-resize;
 }
 
-.diff-hidden-lines .top {
+.monaco-editor .diff-hidden-lines .top {
 	transform: translate(0px, 4px);
 }
 
-.diff-hidden-lines .bottom {
+.monaco-editor .diff-hidden-lines .bottom {
 	transform: translate(0px, -6px);
 }
 
-.diff-unchanged-lines {
+.monaco-editor .diff-unchanged-lines {
 	background: var(--vscode-diffEditor-unchangedCodeBackground);
 }
 
-.noModificationsOverlay {
+.monaco-editor .noModificationsOverlay {
 	z-index: 1;
 	background: var(--vscode-editor-background);
 
@@ -50,7 +50,7 @@
 }
 
 
-.diff-hidden-lines .center {
+.monaco-editor .diff-hidden-lines .center {
 	background: var(--vscode-diffEditor-unchangedRegionBackground);
 	color: var(--vscode-diffEditor-unchangedRegionForeground);
 	overflow: hidden;
@@ -61,43 +61,43 @@
 	height: 24px;
 }
 
-.diff-hidden-lines .center span.codicon {
+.monaco-editor .diff-hidden-lines .center span.codicon {
 	vertical-align: middle;
 }
 
-.diff-hidden-lines .center a:hover .codicon {
+.monaco-editor .diff-hidden-lines .center a:hover .codicon {
 	cursor: pointer;
 	color: var(--vscode-editorLink-activeForeground) !important;
 }
 
-.movedOriginal {
+.monaco-editor .movedOriginal {
 	border: 2px solid var(--vscode-diffEditor-move-border);
 }
 
-.movedModified {
+.monaco-editor .movedModified {
 	border: 2px solid var(--vscode-diffEditor-move-border);
 }
 
-.moved-blocks-lines {
+.monaco-editor .moved-blocks-lines {
 	position: absolute;
 	pointer-events: none;
 }
 
-.moved-blocks-lines path {
+.monaco-editor .moved-blocks-lines path {
 	fill: none;
 	stroke: var(--vscode-diffEditor-move-border);
 	stroke-width: 2;
 }
 
-.char-delete.diff-range-empty {
+.monaco-editor .char-delete.diff-range-empty {
 	margin-left: -1px;
 	border-left: solid var(--vscode-diffEditor-removedTextBackground) 3px;
 }
 
-.char-insert.diff-range-empty {
+.monaco-editor .char-insert.diff-range-empty {
 	border-left: solid var(--vscode-diffEditor-insertedTextBackground) 3px;
 }
 
-.fold-unchanged {
+.monaco-editor .fold-unchanged {
 	cursor: pointer;
 }