HTML Tables

Hi W3C,

First of all I'm not good at english, I'll try my best. I have a  
question about HTML Tables. Why if I want to tell all the <td>  
elements of the same column  their width;  I have to tell every <td>  
their width? In my noob mind.... I think makes sense If I give the  
first <td> of the column it's width; and the others <td> from this  
column takes the same width that the first <td>. This way is more easy  
and fast to html coders.

Pardon me if it's a silly question, and my sincerely apology and  
respect but I really want a answer because I want to understand.

Have a nice day!

Code Free

P.D. I tried to find someone contact email who knows spanish in your  
website; but it was difficult and I didn't find it.