Table background color inheritance

Question

In my code (html:27-30, css:150-157) I used a table, but it seems like the background of the <td> elements is inherited by the <tr> elements. Is it possible to give every <td> another background color without changing the <tr>'s background?
https://code.sololearn.com/WOFHWpaKq8k2/?ref=app

Answer 1

Aprendrox is right
td{
background-color:red;
}

Answer 2

But why does it not work when calling the id's / classes that I gave them?
or when I put bgcolor="" in the html
and what is the difference between background and background-color. I mostly use background 'cause I'm lazy