https://www.w3schools.com/hTml/html_table_colspan_rowspan.asp
HTML Table Colspan & Rowspan
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
html tablecolspanrowspan
https://wp-p.info/tpl_dictionary_rep.php?cat=dictionary-html&fl=colspan_rowspan&lang=en
colspan / rowspan | HTML Dictionary
Learn how to use colspan / rowspan.
colspanrowspanhtmldictionary