Columns look fine then break

I’ve added in columns and all looks good in the editing page

but when i press preview it gets all messed up

also the picture of me at the beach goes super crazy although this might be because I need to resize it before uploading, but again looks fine in the edit mode and terrible in the preview

(I’d add more SS but im not allowed)

when i view it live, half the time it works like it shows when I’m editing, half the time it doesn’t. I’ve used columns on my front page with no issues, though it was a while ago

Please help!

Thanks

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