Flex menu not working in Firefox

You can check my main menu flex here: http://funnyfrontend.com/

This menu works fine in Chrome and IE11.

Thaks you.


You have to put display:flex for firefox.

.secondary-navigation ul.creative-menu {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    width: 100%;

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YouTube Direct AuthSub malformed request

google-app-engine youtube-api authsub

I'm using the YouTube Direct for Google App Engine. I go into the Admin section to authenticate my account, but when I do that, instead of logging me in, it redirects me to a page saying: