Advice on fixing push down on menu

[pdxSherpa]

working on this site and the main menu’s dropdown links are pushing down the
menu below it.
http://www.wackersanitary.com/home/wacker53/public_html/tempUpdate/

How can i go about fixing this?
thx
D

[RyanReese]

Do you have access to the script? Currently it is hiding/showing via display:none/block. Change that to visibility:hidden/visible. Something like that. That space needs to be reserved by default to prevent the shift. It will, however, push it down further by default (no way around it unless you have something in mind…?)

[pdxSherpa]

well, yes seeing as to how i am building it i do have access to the files
Will look into your suggestion thank you
D

[PaulOB]

If I understand what you want just change the sub menu to absolute.

e.g.
ul.sub-menu{position:absolute;background:blue}