STEP 1: Go to Administrator Panel > Tabs and Modules > Modules
STEP 2: Type “Notices” in the search bar. Then hit the “Go” button.
STEP 3: Hover over the circle grey icon next to either notices or administrative notices. Select “Edit Content”.
STEP 4: Click the “HTML” button in the GUI. A window will open where you can edit the HTML code for the module.
You will then edit the “height=500” value. Replace the “500” value with whatever you may need based on the recommended settings below:
1 Banner = 200
2 Banners = 350
3 Banners = 500
4 Banners = 650
5 Banners = 800
If you go to the front page to check the display and it looks a little weird, or gets cut off, just add 25 at a time to the value until it fixes the issue.
Save your changes and VOILA!; you fixed the vertical size of the banners.