stylesheets Array
Allows custom stylesheets to be included within the editing area. This setting is applicable only when the Editor is initialized from a textarea and a contenteditable iframe is generated.
Example
<textarea id="editor"></textarea>
<script>
$("#editor").kendoEditor({
stylesheets: [
"https://demos.telerik.com/kendo-ui/content/web/editor/editorStyles.css"
]
});
</script>