Horizontal scroll disappear when adding extra div

Hi all,

When I add a div before the gantt_here div, the horizontal scroll disappear:


But if I put the div after the gantt_here div, the scroll exist:


Why is that?

Thanks in advance

Hi again,

OK so the height:100% places the scroll outside of the browser when adding a div above…
Can I have both 100% and div above or shall I just set the height to like 98% ?