#grid{
    width: 1183px;
    position: absolute;
    top: 0;
    left: 50%;
    margin-left: -581px; /* 5 column - 3 column view */
    xmargin-left: -696px; /* for 4 column view */
    }

#grid div.vert{
    width: 186px;
    border: solid darkturquoise;
    border-width: 0 1px;
    margin-right: 44px;
    background: rgba(255, 0, 0, .2);
    }

#grid div.vert.first-line{
    margin-left: 23px;
    }


/**
 * Horizontal grid lines, defined by your base line height
 *
 * Remember, the CSS properties that define the box model:
 * visible height = height + borders + margins + padding
 */
#grid div.horiz{
    height: 19px;
    border-bottom: 1px dotted rgba(0, 0, 0, .1);
    margin: 0;
    padding: 0;
    }