linkedEditing.css

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

.monaco-editor .linked-editing-decoration {
	background-color: var(--vscode-editor-linkedEditingBackground);

	/* Ensure decoration is visible even if range is empty */
	min-width: 1px;
}