Merging Rows and Columns in HTML Tables
In HTML tables, you can merge cells across multiple columns or rows using the colspan and rowspan attributes on <th> or <td> elements.
colspan: Merges a cell across multiple columns. The value specifies how many columns the cell should span.
rowspan: Merges a cell across multiple rows. The value specifies how many rows the cell should span.
In short: Use colspan to merge cells horizontally across columns and rowspan to merge cells vertically across rows. This helps in creating complex table layouts.