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I know that:

border: 1px solid 1px solid rgba(0, 0, 0, .8);

is causing the line, its just if I remove it the categories look really bad. Jason dont like looking bad :|.

I can't see a dot or a line

You could change the above code to:

border-right: 1px solid 1px solid rgba(0, 0, 0, .8);
border-left: 1px solid 1px solid rgba(0, 0, 0, .8);

And add a border to the top of the .tcat class. The line will no longer show up, however the categories won't have a border at the bottom when not collapsed. To fix that you can use the last-child pseudo-selector.