Whilst designing a new look and feel for a client using a SharePoint publishing environment, I can across a styling issue that prevented me from scrolling down a layout to view the web part zones.
After researching the issue, the solution was simple. It’s casued by missing a CSS Overflow command. For further information about CSS Overflows, visit: http://quirksmode.org/css/overflow.html
To correct the problem, I added the following overflow command. This ensured the scrolling is reinstated on a page layout.
overflow: visible !important;