Active page / Footer divider/ Comments off

Hi!

Fortuna Theme questions:

1. How can I add a color for the “active page”, I ve tried the followings and aren´t working:
.current_page_item {
color: #0ad1e5;
}

#menu > ul > li.current_page_item > a {
color: #0ad1e5;
}

2. How can I remove the footer divider. As I would like to have it one block!?
3. As I would like to have “comments off”, I have tried this .post_meta span.comments {
display: none;
}
, it worked, but all of a sudden is not working any longer.

Thanks in advance!