The word "detail" contains an open syllable and a closed syllable. The first syllable "de-" is open because it ends with a vowel sound, while the second syllable "-tail" is closed because it ends with a consonant sound. Thus, "detail" features both types of syllables.
Closed
Paper is a closed syllable word.
Both open syllables.
Both closed.
It is a closed syllable.
Photo is an open syllable word.
It is an open syllable.
First syllable closed, second syllable open.
Closed
Closed
The second syllable is open, the first is closed.
Paper is a closed syllable word.
Both open syllables.
Both closed.
It's a closed syllable.
It's a closed syllable.
Swim is a closed syllable.