Slight Page Builder Bug

What's wrong with this picture?

Hint: Contains one error in factual circumstance.

LOL, the width of the pages don't add up. ?? In the slider bar. In  other words, what's displayed as the column widths don't equal what the slider bar says.

I suck at these types of games.

We have a winner!  The sum of the parts, is greater than the whole..... thus the right column wraps around,

The two pixel widths must be calculated independently..... incorrectly, I might add.   The width of the right column in px, needs to be 'Page Width' - 'Sum of all other column widths'  This would eliminate whatever rounding error is causing this.  The problem gets worse as you add columns.

I was going to say that the mailbox item was oddly more elevated than all the other items. That too, I guess.

That would not be an error in factual circumstance son..... pay attention!

Also the text in the "Go" button, the "Add Column" button and the "Add Page" button are not quite vertically aligned and should be pushed up just a tad. Though I am sure that can wait till the next upgrade.

It varies from browser to browser. I wonder if they'd accept a ticket that just told them to test this script in a browser other than Firefox.

I'm facing this problem how can solve can you help me please