MOBLE CMS comes with many pre-formatted Layouts. In most Layouts, you will notice that, by default, our Child Columns have 'Maximum Height' set to 'Full Frame'. This ensures both heights aligned perfectly, no matter how much content is added inside the Child Frame. If you have complicated Child Columns, e.g. with Effects, and your columns don't seem to align, set the two innermost Child Frames have are both set to 'Full Frame'.
Please note that Maximum Height can not be viewed in Design Mode.
This is because Design Mode must display Grids in their true form. Flip to Business Mode to view your changes, or View/Preview your page in a new Tab.