Please, don’t use common class names in CSS such as ‘editable’, ‘calendar’ etc.
Such names lead to conflicts with other CSS (jQuery).
The css classes of dhtmlxgrid always use nested rules, the “editable” class for example, stated as
div.gridbox table.obj td.editable{
so it works only inside grid container and must not affect any other elements on page, so such classes can’t break functionality of any other component