src/vs/editor/browser/viewParts/selections/selections.css

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

/*
	Keeping name short for faster parsing.
	cslr = core selections layer rendering (div)
*/
.monaco-editor .lines-content .cslr {
	position: absolute;
}

.monaco-editor			.top-left-radius		{ border-top-left-radius: 3px; }
.monaco-editor			.bottom-left-radius		{ border-bottom-left-radius: 3px; }
.monaco-editor			.top-right-radius		{ border-top-right-radius: 3px; }
.monaco-editor			.bottom-right-radius	{ border-bottom-right-radius: 3px; }

.monaco-editor.hc-black .top-left-radius		{ border-top-left-radius: 0; }
.monaco-editor.hc-black .bottom-left-radius		{ border-bottom-left-radius: 0; }
.monaco-editor.hc-black .top-right-radius		{ border-top-right-radius: 0; }
.monaco-editor.hc-black .bottom-right-radius	{ border-bottom-right-radius: 0; }