Why is the 2nd row of this table not showing in this code?

Question

Hi everybody!
I am learning HTML.
The code is:
<table border="2">
<tr rowspan="1">
<td bgcolor="red">Red</td>
<td bgcolor="blue">Blue</td>
<td bgcolor="green">Green</td>
</tr>
<tr>
<td></td>
<td></td>
<td colspan="2"></td>
</tr>
<tr>
<td>Yellow</td>
<td colspan="1">Orange</td>
</tr>
</table>

My question is:The 2nd row cannot be seen in the output.Why is it so?
I am using SoloLearn's online HTML editor

Answer 1

So simple!
If you didnt fill the second row with at least one word... nothing appear... Because the row is emptied.
Thank You

Answer 2

Thank you

Answer 3

https://code.sololearn.com/WUC98u8GnK5c/?ref=app