base.css in Drupal 8

/*!
 * jQuery UI CSS Framework 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * http://api.jqueryui.com/category/theming/
 */
@import url("core.css");

@import url("accordion.css");
@import url("autocomplete.css");
@import url("button.css");
@import url("checkboxradio.css");
@import url("controlgroup.css");
@import url("datepicker.css");
@import url("dialog.css");
@import url("draggable.css");
@import url("menu.css");
@import url("progressbar.css");
@import url("resizable.css");
@import url("selectable.css");
@import url("selectmenu.css");
@import url("sortable.css");
@import url("slider.css");
@import url("spinner.css");
@import url("tabs.css");
@import url("tooltip.css");