How to set the last active element in owl carousel to a class?

Question

css

What am I doing wrong?

https://jsfiddle.net/bjnz4y8e/3/

Answer 1

https://jsfiddle.net/bjnz4y8e/14/

Answer 2

$('.owl-carousel .owl-item').eq(sbAllItms-1)
The index is one less than the count. Since the index starts from zero