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

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

/* START cover the case that slider is visible on mouseover */
.monaco-editor .minimap.slider-mouseover .minimap-slider {
	opacity: 0;
	transition: opacity 100ms linear;
}
.monaco-editor .minimap.slider-mouseover:hover .minimap-slider {
	opacity: 1;
}
.monaco-editor .minimap.slider-mouseover .minimap-slider.active {
	opacity: 1;
}
/* END cover the case that slider is visible on mouseover */

.monaco-editor .minimap-shadow-hidden {
	position: absolute;
	width: 0;
}
.monaco-editor .minimap-shadow-visible {
	position: absolute;
	left: -6px;
	width: 6px;
}