Scrolls straight passed Main Content section

Hi, My website - https://chalicewellmanypathsonesourcefestival.org - has started scrolling straight passed the Main Content section. The header area is #section0, the Main Content area used to be #section1 (I know this because I created the menu item '2019 | Buddhism' to point to it) but this has now been assigned to the following Featured Content area. The only change I've made is to add a further section Portfolio. Any suggestions? Thanks.