Reply To: CSS Centre and Left align

[Beverleyh]

Why is the green box filling the entire blue body?

It’s expanding to accommodate the contents (that’s what inline-blocks do), so it will let as many red blocks as possible fit along one line, pushing out its width to fit its own container (body) unless it is told otherwise, i.e. you cap it with a max-width, or restrict the width of what’s inside, etc.