Not sure if my simple CSS layout should be considered one or 2 column? [closed]

Not sure if my simple CSS layout should be considered one or 2 column?
[closed]

References

Reference NO 1

http://codex.wordpress.org/CSS_Troubleshooting

Reference NO 2

http://www.thesitewizard.com/css/design-2-column-layout.shtml

Reference NO 3

http://stackoverflow.com/questions/83073/why-not-use-tables-for-layout-in-html

Reference NO 4

http://designm.ag/tutorials/semantic-2col-3col-css-layouts/

Reference NO 5

http://www.sitepoint.com/give-floats-the-flick-in-css-layouts/

Reference NO 6

http://coding.smashingmagazine.com/2010/11/08/equal-height-columns-using-borders-and-negative-margins-with-css/

Reference NO 7

http://www.csstutorial.net/2010/02/creating-a-basic-2-column-center-aligned-fixed-width-layout-with-css/

Reference NO 8

http://www.barrelny.com/blog/text-align-justify-and-rwd/