ckeditor5-image-upload-base64/packages/ckeditor5-code-block/theme/codeblock.css

The development environment of CKEditor 5 – the best browser-based rich text editor.

/*
 * Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

.ck-content pre {
	padding: 1em;
	color: hsl(0, 0%, 20.8%);
	background: hsla(0, 0%, 78%, 0.3);
	border: 1px solid hsl(0, 0%, 77%);
	border-radius: 2px;

	/* Code block are language direction–agnostic. */
	text-align: left;
	direction: ltr;

	tab-size: 4;
	white-space: pre-wrap;

	/* Don't inherit the style, e.g. when in a block quote. */
	font-style: normal;

	/* Don't let the code be squashed e.g. when in a table cell. */
	min-width: 200px;

	& code {
		background: unset;
		padding: 0;
		border-radius: 0;
	}
}

.ck.ck-editor__editable pre {
	position: relative;

	&[data-language]::after {
		content: attr(data-language);
		position: absolute;
	}
}