Pagination problem, How I can remove the current page from right side ?

This is a CSS matter. And can't be changed with Codeigniter settings.

https://www.w3schools.com/cssref/pr_back...-color.asp
https://www.w3schools.com/cssref/pr_text_color.asp

Apply your styling inside this tag.

Code:

ul.pagination li.active {
background-color: green;
...
...
...
}