diff --git a/app/assets/builds/.keep b/app/assets/builds/.keep
deleted file mode 100644
index e69de29..0000000
diff --git a/app/assets/config/manifest.js b/app/assets/config/manifest.js
index bf57da8..d56c201 100644
--- a/app/assets/config/manifest.js
+++ b/app/assets/config/manifest.js
@@ -1,5 +1,5 @@
 //= link_tree ../images
-//= link_tree ../builds
+//= link_directory ../stylesheets .css
 //= link_tree ../audios
 //= link_tree ../../javascript .js
 //= link_tree ../../../vendor/javascript .js
diff --git a/app/assets/stylesheets/application.bootstrap.scss b/app/assets/stylesheets/application.bootstrap.scss
deleted file mode 100644
index 5232634..0000000
--- a/app/assets/stylesheets/application.bootstrap.scss
+++ /dev/null
@@ -1,44 +0,0 @@
-@import 'bootstrap/scss/bootstrap';
-@import 'bootstrap-icons/font/bootstrap-icons';
-
-.lyrics-site-content {
-  min-height: 700px;
-}
-
-.lyrics-site-sidenav-item {
-
-  a,
-  button {
-    color: #fff;
-  }
-}
-
-.layoutAuthentication {
-  display: flex;
-  flex-direction: column;
-  min-height: 100vh;
-
-  .layoutAuthentication_content {
-    min-width: 0;
-    flex-grow: 1;
-  }
-}
-
-.img-error {
-  max-width: 20rem;
-}
-
-#layoutError {
-  display: flex;
-  flex-direction: column;
-  min-height: 100vh;
-}
-
-#layoutError #layoutError_content {
-  min-width: 0;
-  flex-grow: 1;
-}
-
-#layoutError #layoutError_footer {
-  min-width: 0;
-}
\ No newline at end of file
diff --git a/app/assets/stylesheets/application.css.scss b/app/assets/stylesheets/application.css.scss
index 0fa9e6f..52de590 100644
--- a/app/assets/stylesheets/application.css.scss
+++ b/app/assets/stylesheets/application.css.scss
@@ -1 +1,43 @@
-@import "font-awesome";
\ No newline at end of file
+@import "font-awesome";
+
+.lyrics-site-content {
+    min-height: 700px;
+  }
+  
+  .lyrics-site-sidenav-item {
+  
+    a,
+    button {
+      color: #fff;
+    }
+  }
+  
+  .layoutAuthentication {
+    display: flex;
+    flex-direction: column;
+    min-height: 100vh;
+  
+    .layoutAuthentication_content {
+      min-width: 0;
+      flex-grow: 1;
+    }
+  }
+  
+  .img-error {
+    max-width: 20rem;
+  }
+  
+  #layoutError {
+    display: flex;
+    flex-direction: column;
+    min-height: 100vh;
+  }
+  
+  #layoutError #layoutError_content {
+    min-width: 0;
+    flex-grow: 1;
+  }
+  
+  #layoutError #layoutError_footer {
+    min-width: 0;
+  }
\ No newline at end of file
diff --git a/app/views/layouts/application.html.slim b/app/views/layouts/application.html.slim
index 8e75ade..402736c 100644
--- a/app/views/layouts/application.html.slim
+++ b/app/views/layouts/application.html.slim
@@ -8,6 +8,6 @@ html
     = csp_meta_tag
     = favicon_link_tag('favicon.ico')
     = stylesheet_link_tag "application", "data-turbo-track": "reload"
-    = javascript_include_tag "application", "data-turbo-track": "reload", defer: true
+    = javascript_importmap_tags
   body class="#{yield (:body_class)}"
     = yield
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
index d8f9659..b3a1313 100644
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -7,7 +7,6 @@
 
 # Add additional assets to the asset load path.
 # Rails.application.config.assets.paths << Emoji.images_path
-Rails.application.config.assets.paths << Rails.root.join('node_modules/bootstrap-icons/font')
 
 # Precompile additional assets.
 # application.js, application.css, and all non-JS/CSS in the app/assets