I'm studying HTML to use in email marketing and I was looking at this email here: Iunderstoodthebeginningofthecode,butIdidnotunderstandthecolspanapplication:
<tr><td><ahref="https://www.facebook.com/FGV-Energia-1579891958938780/?fref=ts" target="_blank"><img src="http://www.fgv.br/mailing/2017/fgv_energia/boletim/marco/imagens/dez_01_01.jpg"width="96" height="52" alt="" style="display:block" border="0"></a>
</td>
<td>
<a href="https://www.linkedin.com/company/10274929?trk=tyah&trkInfo=clickedVertical%3Ashowcase,clickedEntityId%3A10274929,idx%3A2-1-2,tarId%3A1459366866829,tas%3Afgv energia "><img src="http://www.fgv.br/mailing/2017/fgv_energia/boletim/marco/imagens/dez_01_02.jpg"width="58" height="52" alt="" style="display:block" border="0"></a>
</td>
<td>
<a href="http://www.fgv.br/energia" target="_blank"><img src="http://www.fgv.br/mailing/2017/fgv_energia/boletim/marco/imagens/dez_01_03.jpg"width="446" height="52" alt="" style="display:block" border="0"></a>
</td>
</tr>
<tr>
<td colspan="4">
<img src="http://www.fgv.br/mailing/FGV_Energia/boletim/2017/jun/01.png"alt="Header: Boletim de Conjuntura do Setor Energético- Junho 2017" width="599" height="421" border="0" style="display:block"></td>
</tr>
And if I take out the colspan, the top of the layout moves to the left.