How to remove artifact after opening bootstrap modal window?

Question

css

Good afternoon! Please tell me how to remove an unexpected artifact on the page of my project?

Here is a link to the project page where the problem occurs reg.azuron.ru/projects.
The problem is that I can’t catch where this hyphen comes from, neither in Chrome nor in Mozilla I can understand how it appeared. Maybe someone faced something similar, tell me how to remove this dirty trick)

Answer 1

a,a:visited {
    text-decoration: none;
}

Answer 2

Firstly, you don’t have an artifact, it’s the underscore of links, and secondly, don’t forget to mark the solution on the toaster (after all , Symphony solved your issue, but you didn’t mark it as a solution)