What is colspan

Answer 1

<table border=1>
<tr><td colspan=2>Hi</td></tr>
<tr><td>Hi</td><td>Hi</td></tr>
</table>

Try this and you will know what I mean.

Answer 2

It's like "merge cells" in MS Excel.

Answer 3

got it

Answer 4

I don't use excel so Can you explain in other way