There are 68 module positions. If no module is published to a position, it will not appear, collapsing the entire area.
There are non-standard elements that are injected into the template grid structure when enabled via the template parameter, such as the logo into header-a. These features stack vertically with any modules published to that position.
Control all modules positions with Gantry, in terms of widths within the module row, and left/right/middle placement for the mainbody/sidebar area.
The below diagram is of the Module Variations page.
The following are required for Omnicron to operate fully:
Omnicron is a CSS 3 template with graceful degradation. Firefox 3.6+, Safari 5+, Opera 10+, Chrome 3+ and experimentally with IE9, support CSS3.