html/css question

I have done a dropdown menu, but when i click i see border dotted on the whole selection as you will see in the screenshot, please open it.

I don't know how to fix it

thank you
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Duy PhamFreelance IT ConsultantCommented:
Please post the link to your website or sample page with css. There is no way to find out why with only a screenshot.
adra750Author Commented:
this issue exist with firefox
remove the first
<script src=""></script>
of your code
Jquery need to be the first js link
and you should no put 2 exact link for Bootstrap

To fix the dotted
btn::-moz-focus-inner {
  border: 0;

Open in new window

or something like this:
:focus, :active {
    outline: 0;
    border: 0;

Open in new window

Check this is this is not working:

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adra750Author Commented:
The answer is this :

      outline-style: none;
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