/* Move these markers to grid.css */
#sg-markers {
    display: block;
    position: static;
    height: 0;
    width: 0;
    overflow: hidden;
    font-size: 0;
    line-height: 0;
}

[class^="sg-marker-"], [class*="sg-marker-"] {
    display: block;
    width: 0;
    height: 0;
    overflow: hidden;
    font-size: 0;
    line-height: 0;
    visibility: hidden;
}