The menu on the site does not work, how to fix it?

Question

Bootstrap

Hello.
The menu on the site stopped working, the menu opens, but does not close back.
You can see that when you click on the button to open the menu, the show class appears and that's it, then it does not disappear
Link to the site

Answer 1

Judging by the markup on the off. bootstrap site, you are missing the initial class for button class="navbar-toggler collapsed" . You just have button class="navbar-toggler" .