@ckeditor/ckeditor5-table/theme/tablecolumnresize.css

/*
 * Copyright (c) 2003-2023, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

:root {
	--ck-color-table-column-resizer-hover: var(--ck-color-base-active);
	--ck-table-column-resizer-width: 7px;

	/* The offset used for absolute positioning of the resizer element, so that it is placed exactly above the cell border.
	   The value is: minus half the width of the resizer decreased additionaly by the half the width of the border (0.5px). */
	--ck-table-column-resizer-position-offset: calc(var(--ck-table-column-resizer-width) * -0.5 - 0.5px);
}

.ck-content .table .ck-table-resized {
	table-layout: fixed;
}

.ck-content .table table {
	overflow: hidden;
}

.ck-content .table td,
.ck-content .table th {
	position: relative;
}

.ck.ck-editor__editable .table .ck-table-column-resizer {
	position: absolute;
	/* The resizer element resides in each cell so to occupy the entire height of the table, which is unknown from a CSS point of view,
	   it is extended to an extremely high height. Even for screens with a very high pixel density, the resizer will fulfill its role as
	   it should, i.e. for a screen of 476 ppi the total height of the resizer will take over 350 sheets of A4 format, which is totally
	   unrealistic height for a single table. */
	top: -999999px;
	bottom: -999999px;
	right: var(--ck-table-column-resizer-position-offset);
	width: var(--ck-table-column-resizer-width);
	cursor: col-resize;
	user-select: none;
	z-index: var(--ck-z-default);
}

.ck.ck-editor__editable.ck-column-resize_disabled .table .ck-table-column-resizer {
	display: none;
}

/* The resizer elements, which are extended to an extremely high height, break the drag & drop feature in Chrome. To make it work again,
   all resizers must be hidden while the table is dragged. */
.ck.ck-editor__editable .table[draggable] .ck-table-column-resizer {
	display: none;
}

.ck.ck-editor__editable .table .ck-table-column-resizer:hover,
.ck.ck-editor__editable .table .ck-table-column-resizer__active {
	background-color: var(--ck-color-table-column-resizer-hover);
	opacity: 0.25;
}

.ck.ck-editor__editable[dir=rtl] .table .ck-table-column-resizer {
	left: var(--ck-table-column-resizer-position-offset);
	right: unset;
}