snippetSession.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 .snippet-placeholder {
	min-width: 2px;
	outline-style: solid;
	outline-width: 1px;
	background-color: var(--vscode-editor-snippetTabstopHighlightBackground, transparent);
	outline-color: var(--vscode-editor-snippetTabstopHighlightBorder, transparent);
}

.monaco-editor .finish-snippet-placeholder {
	outline-style: solid;
	outline-width: 1px;
	background-color: var(--vscode-editor-snippetFinalTabstopHighlightBackground, transparent);
	outline-color: var(--vscode-editor-snippetFinalTabstopHighlightBorder, transparent);
}