I did not want these red lines. They are not really lines. They are spaces between the divs. Red is the color I set for the container div inside which other divs rest. Unwanted spaces between the div tages totally confused me. They appeared on every browser. Made me think that I know nothing about HTML/CSS. Made me feel like an incompetant loser. I was frightened. Disillusioned. Frustrated. nuff said. paragraph tag is the culprit. Put this awesome little code in your CSS. p { padding: 0; margin-top: 0; margin-right: 0; margin-bottom: 1em; margin-left: 0; } TADA. Spooky spaces gone.