use CSS located on my hosting to remove Firefox border

[GLAMA]

I have a problem with my CSS file located in a hosting folder. If I browse my site with Firefox is appears a dotted border when click on any links. So how to remove the border?

[iceman1]

Do not try to remove it with a standard code in CSS file:

a: hover {
border: none;
}

Use this code, it works flawlessly:

a: active {
outline: 0;
}