I think the title says it all, just look at this
The easiest way. No tables. No packages. If there is need for some, I can't complain though. It's just because I haven't seen a question quite like this one for TEX. The image is from Word and what the person basically did was to select the entire line and fill with a background colour fill.
Thank you.
\colorbox
of packagecolor
orxcolor
.