Creating a hamburger navigation bar with Semantic UI on Rails

I'm attempting to create a hamburger menu with Semantic UI on Rails, but it isn't working. On the navigation bar, I have the logo Recipeazy, and then I have 3 items, Home, About Us, and Settings, and then I have 2 buttons: Create a new Recipe, and Sign out. (If the user is not signed in, there are only 2 buttons, Login and Sign up. I used ruby to make the if else statement). I tried doing what someone did over here but it did not work. So then I tried inspecting Semantic UI's webpage's side bar and still did not work. I would like to stick with Semantic UI's sidebar though. Here is my code:

application.html.haml

!!!
%html
%head
%title Recipeazy
= stylesheet_link_tag 'application', media: 'all'
= javascript_include_tag 'application'
%link:rel => "stylesheet", :href => "http://cdnjs.cloudflare.com/ajax/libs/normalize/3.0.1/normalize.min.css"
%link:rel => "stylesheet", :href => "http://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css"

= csrf_meta_tags
%body
%div.ui.fixed.inverted.main.menu
%div.ui.container
%a.launch.icon.item
%i.content.icon
.wrapper.clearfix
%div.brand.item
#logo= link_to "Recipeazy", root_path
%nav
- if user_signed_in?
%div.item
= link_to root_path do
%i.fa.fa-home
Home
%div.item
= link_to about_path do
%i.fa.fa-book
About Us
%div.item
= link_to edit_user_registration_path do
%i.fa.fa-cog
Settings
%div.item
= link_to new_post_path, class: "button" do
%i.fa.fa-plus
Add Recipe
%div.item
= link_to destroy_user_session_path, class:"button", method: :delete do
%i.fa.fa-sign-out
Sign Out
- else
%item
= link_to "Log In", new_user_session_path, class: "button"
%item
= link_to "Sign Up", new_user_registration_path, class: "button"

%p.notice= notice
%p.alert= alert
.wrapper
= yield


I think that the Semantic UI is working because I already used it to style the buttons on my other pages.

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