'Why is my Bootstrap column not staying on the right side with the same setup on some pages?

On two pages I have the same setup with a column of 75% width and a right side column of 25% width. On this page everything works fine (the column with the calendar is on the right side): https://maciunmacies.valoda.lv/izglitiba-diaspora/metodikas-skola-pupa

But, for example, on this page the column with the calendar suddenly jumps down below (it didn't happen before and I didn't change anything): https://maciunmacies.valoda.lv/izglitiba-diaspora/talmaciba

So I have no clue. Maybe someone could help me understand why the pages are behaving this way? Thank you!



Solution 1:[1]

I have checked your both pages. It's div close tag issues. Solution : you need to close row class div after col-lg-3 class div. Issues : But now row class div it's close before col-lg-3 class div.

Solution 2:[2]

"col-lg-3 col-md-4 d-none d-sm-none d-md-block diaspora-banners" is not inside the row.

Compare the structure of both pages

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Shammi Singh
Solution 2 jiya ranka