Excel (XLSX) to HTML Table Converter Tool
This tool will output an html table enclosed in a div.
Use this tool to output html data you can paste into an html editor.
In the CSS Classes section, multiple css classes can be entered, just be sure to separate them by a space as you would in pure html.
Bootstrap 4 classes are available on this site.
Use Ctrl + A to select everything in the textbox and Ctrl + C to copy the HTML so you can paste it in another editor.