diff --git a/app/controllers/admin/asset_collections_controller.rb b/app/controllers/admin/asset_collections_controller.rb
new file mode 100644
index 00000000..b2d6c35c
--- /dev/null
+++ b/app/controllers/admin/asset_collections_controller.rb
@@ -0,0 +1,66 @@
+module Admin
+  class AssetCollectionsController < BaseController
+    
+    sections 'assets'  
+    
+    before_filter :set_collections
+  
+    def index
+      if not @collections.empty?
+        redirect_to(edit_admin_asset_collection_url(@collections.first)) and return
+      end
+    end
+  
+    def show
+      @collection = current_site.asset_collections.find(params[:id])
+      render :action => 'edit'
+    end
+
+    def new
+      @collection = current_site.asset_collections.build
+    end
+
+    def edit
+      @collection = current_site.asset_collections.find(params[:id])
+    end
+
+    def create
+      @collection = current_site.asset_collections.build(params[:asset_collection])
+
+      if @collection.save
+        flash_success!
+        redirect_to edit_admin_asset_collection_url(@collection)
+      else
+        flash_error!
+        render :action => 'new'
+      end
+    end
+
+    def update
+      @collection = current_site.asset_collections.find(params[:id])
+
+      if @collection.update_attributes(params[:asset_collection])
+        flash_success!
+        redirect_to edit_admin_asset_collection_url(@collection)
+      else
+        flash_error!
+        render :action => 'edit'
+      end
+    end
+
+    def destroy
+      @collection = current_site.asset_collections.find(params[:id])
+      @collection.destroy
+
+      flash_success!
+
+      redirect_to admin_asset_collections_url
+    end
+  
+    protected 
+  
+    def set_collections
+      @collections = current_site.asset_collections
+    end
+  end
+end
diff --git a/app/controllers/admin/assets_controller.rb b/app/controllers/admin/assets_controller.rb
new file mode 100644
index 00000000..cdeb1926
--- /dev/null
+++ b/app/controllers/admin/assets_controller.rb
@@ -0,0 +1,48 @@
+module Admin
+  class AssetsController < BaseController
+    
+    sections 'assets'  
+    
+    before_filter :set_collections_and_current_collection
+    
+    def new
+      @asset = @collection.assets.build
+    end
+
+    def edit
+      @asset = @collection.assets.find(params[:id])
+    end
+
+    def create
+      @asset = @collection.assets.build(params[:asset])
+
+      if @asset.save
+        flash_success!
+        redirect_to edit_admin_asset_collection_url(@collection)
+      else
+        flash_error!
+        render :action => 'new'
+      end
+    end
+
+    def update
+      @asset = @collection.assets.find(params[:id])
+
+      if @asset.update_attributes(params[:asset])
+        flash_success!
+        redirect_to edit_admin_asset_collection_url(@collection)
+      else
+        flash_error!
+        render :action => 'edit'
+      end
+    end
+  
+    protected 
+  
+    def set_collections_and_current_collection
+      @collections = current_site.asset_collections
+      @collection = @collections.find(params[:collection_id])
+    end
+    
+  end
+end
diff --git a/app/models/asset.rb b/app/models/asset.rb
new file mode 100644
index 00000000..69322400
--- /dev/null
+++ b/app/models/asset.rb
@@ -0,0 +1,28 @@
+class Asset
+  include Mongoid::Document
+  include Mongoid::Timestamps
+  
+  ## fields ##
+  field :name, :type => String
+  field :content_type, :type => String
+  field :width, :type => Integer
+  field :height, :type => Integer
+  field :size, :type => Integer
+  field :position, :type => Integer, :default => 0
+  mount_uploader :source, AssetUploader
+    
+  ## associations ##
+  embedded_in :collection, :class_name => 'AssetCollection', :inverse_of => :assets
+  
+  ## validations ##
+  validates_presence_of :name, :source
+  
+  ## methods ##
+  
+  %w{image stylesheet javascript pdf video audio}.each do |type|
+    define_method("#{type}?") do
+      self.content_type == type
+    end  
+  end
+  
+end
\ No newline at end of file
diff --git a/app/models/asset_collection.rb b/app/models/asset_collection.rb
new file mode 100644
index 00000000..9150f32b
--- /dev/null
+++ b/app/models/asset_collection.rb
@@ -0,0 +1,57 @@
+class AssetCollection  
+  include Mongoid::Document
+  include Mongoid::Timestamps
+  
+  ## fields ##
+  field :name, :type => String
+  field :slug, :type => String
+  
+  ## associations ##
+  belongs_to_related :site
+  embeds_many :assets
+  # has_many_related :assets
+  
+  ## callbacks ##
+  before_validate :normalize_slug
+  before_save :store_asset_positions!
+  
+  ## validations ##
+  validates_presence_of :site, :name, :slug
+  validates_uniqueness_of :slug, :scope => :site_id
+  
+  ## methods ##
+  
+  def ordered_assets
+    self.assets.sort { |a, b| (a.position || 0) <=> (b.position || 0) }
+  end
+  
+  def assets_order
+    self.ordered_assets.collect(&:id).join(',')
+  end
+  
+  def assets_order=(order)
+    @assets_order = order
+  end
+    
+  protected
+  
+  def normalize_slug
+    self.slug = self.name.clone if self.slug.blank? && self.name.present?    
+    self.slug.slugify! if self.slug.present?
+  end
+  
+  def store_asset_positions!
+    return if @assets_order.nil?
+    
+    @assets_order.split(',').each_with_index do |asset_id, index|
+      self.assets.find(asset_id).position = index
+    end
+    
+    self.assets.each do |asset|
+      if !@assets_order.split(',').include?(asset._id)
+        self.assets.delete(asset) 
+        asset.send(:delete)
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/app/models/site.rb b/app/models/site.rb
index 29204c40..8bc13c7a 100644
--- a/app/models/site.rb
+++ b/app/models/site.rb
@@ -12,6 +12,7 @@ class Site
   has_many_related :layouts
   has_many_related :snippets
   has_many_related :theme_assets
+  has_many_related :asset_collections
   embeds_many :memberships
   
   ## validations ##
@@ -82,7 +83,7 @@ class Site
   end
   
   def destroy_in_cascade!
-    %w{pages layouts snippets theme_assets}.each do |association|
+    %w{pages layouts snippets theme_assets asset_collections}.each do |association|
       self.send(association).destroy_all
     end
   end
diff --git a/app/models/theme_asset.rb b/app/models/theme_asset.rb
index 5a180cce..9e21af48 100644
--- a/app/models/theme_asset.rb
+++ b/app/models/theme_asset.rb
@@ -20,7 +20,7 @@ class ThemeAsset
   
   ## validations ##
   validate :extname_can_not_be_changed
-  validates_presence_of :site
+  validates_presence_of :site, :source
   validates_presence_of :slug, :if => Proc.new { |a| a.new_record? && a.performing_plain_text? }
   validates_integrity_of :source
     
@@ -84,9 +84,7 @@ class ThemeAsset
   
   def extname_can_not_be_changed
     return if self.new_record?
-    
-    Rails.logger.debug "previous = #{self.source.file.original_filename.inspect} / #{self.source_filename.inspect}"
-    
+        
     if File.extname(self.source.file.original_filename) != File.extname(self.source_filename)
       self.errors.add(:source, :extname_changed)
     end
diff --git a/app/uploaders/asset_uploader.rb b/app/uploaders/asset_uploader.rb
new file mode 100644
index 00000000..aa230047
--- /dev/null
+++ b/app/uploaders/asset_uploader.rb
@@ -0,0 +1,64 @@
+# encoding: utf-8
+
+class AssetUploader < CarrierWave::Uploader::Base
+
+  include CarrierWave::RMagick
+
+  def store_dir
+    "sites/#{model.collection.site_id}/assets/#{model.id}"
+  end
+  
+  version :thumb do
+    process :resize_to_fill => [50, 50]
+    process :convert => 'png'
+  end
+  
+  version :medium do
+    process :resize_to_fill => [80, 80]
+    process :convert => 'png'
+  end
+
+  version :preview do
+    process :resize_to_fit => [880, 1100]
+    process :convert => 'png'    
+  end
+  
+  process :set_content_type  
+  process :set_size
+  process :set_width_and_height
+
+  def set_content_type
+    value = :other
+    
+    self.class.content_types.each_pair do |type, rules|
+      rules.each do |rule|
+        case rule
+        when String then value = type if file.content_type == rule
+        when Regexp then value = type if (file.content_type =~ rule) == 0
+        end
+      end
+    end
+    
+    model.content_type = value
+  end
+  
+  def set_size
+    model.size = file.size
+  end
+  
+  def set_width_and_height
+    if model.image?
+      model.width, model.height = `identify -format "%wx%h" #{file.path}`.split(/x/).collect(&:to_i)
+    end
+  end
+    
+  def self.content_types
+    {
+      :image      => ['image/jpeg', 'image/pjpeg', 'image/gif', 'image/png', 'image/x-png', 'image/jpg'],
+      :movie      => [/^video/, 'application/x-shockwave-flash', 'application/x-swf'],
+      :audio      => [/^audio/, 'application/ogg', 'application/x-mp3'],
+      :pdf        => ['application/pdf', 'application/x-pdf']
+    }  
+  end
+    
+end
diff --git a/app/uploaders/theme_asset_uploader.rb b/app/uploaders/theme_asset_uploader.rb
index bce366e2..fcfd863a 100644
--- a/app/uploaders/theme_asset_uploader.rb
+++ b/app/uploaders/theme_asset_uploader.rb
@@ -71,8 +71,6 @@ class ThemeAssetUploader < CarrierWave::Uploader::Base
   end
   
   def filename
-    Rails.logger.debug "slug ===> #{model.slug} / #{model.content_type} / #{original_filename}"
-    
     if model.slug.present?
       model.filename
     else
@@ -80,8 +78,6 @@ class ThemeAssetUploader < CarrierWave::Uploader::Base
       basename = File.basename(original_filename, extension).slugify(:underscore => true)
       "#{basename}#{extension}"
     end
-    # 
-    # original_filename
   end
   
 end
diff --git a/app/views/admin/asset_collections/_asset.html.haml b/app/views/admin/asset_collections/_asset.html.haml
new file mode 100644
index 00000000..31615f46
--- /dev/null
+++ b/app/views/admin/asset_collections/_asset.html.haml
@@ -0,0 +1,7 @@
+%li{ :id => "asset-#{asset.id}", :class => "asset #{'last' if (asset_counter + 1) % 6 == 0}"}
+  %h4= link_to truncate(asset.name, :length => 22), edit_admin_asset_path(@collection, asset)
+  .image
+    .inside
+      = vignette_tag(asset)
+  .actions
+    = link_to image_tag('admin/list/icons/cross.png'), '#', :class => 'remove', :confirm => t('admin.messages.confirm')
\ No newline at end of file
diff --git a/app/views/admin/asset_collections/edit.html.haml b/app/views/admin/asset_collections/edit.html.haml
new file mode 100644
index 00000000..d0fe0adc
--- /dev/null
+++ b/app/views/admin/asset_collections/edit.html.haml
@@ -0,0 +1,28 @@
+- title link_to(@collection.name.blank? ? @collection.name_was : @collection.name, '#', :rel => 'asset_collection_name', :title => t('.ask_for_name'), :class => 'editable')
+
+- content_for :head do
+  = javascript_include_tag 'admin/asset_collections.js'
+
+- content_for :submenu do
+  = render 'admin/shared/menu/assets'
+
+%p= t('.help')
+
+- content_for :buttons do
+  = admin_button_tag :add_asset, new_admin_asset_url(@collection), :class => 'add'
+  
+%p.no-items{ :style => "#{'display: none' unless @collection.assets.empty? }" }
+  = t('.no_items', :url => new_admin_asset_url(@collection))
+    
+%ul#assets.assets.sortable
+  = render :partial => 'asset', :collection => @collection.ordered_assets
+  %li.clear
+  
+= semantic_form_for @collection, :url => admin_asset_collection_url(@collection), :html => { :multipart => true } do |f|
+  = f.hidden_field :assets_order
+  
+  = f.foldable_inputs :name => :options do
+    = f.input :name
+    = f.input :slug, :required => false
+    
+  = render 'admin/shared/form_actions', :delete_button => link_to(content_tag(:span, t('.destroy')), admin_asset_collection_url(@collection), :confirm => t('admin.messages.confirm'), :method => :delete, :class => 'button small remove'), :button_label => :update
\ No newline at end of file
diff --git a/app/views/admin/asset_collections/index.html.haml b/app/views/admin/asset_collections/index.html.haml
new file mode 100644
index 00000000..bf0bdc48
--- /dev/null
+++ b/app/views/admin/asset_collections/index.html.haml
@@ -0,0 +1,8 @@
+- title t('.title')
+
+- content_for :submenu do
+  = render 'admin/shared/menu/assets'
+
+%p= t('.help')
+
+%p.no-items= t('.no_items', :url => new_admin_asset_collection_url)
diff --git a/app/views/admin/asset_collections/new.html.haml b/app/views/admin/asset_collections/new.html.haml
new file mode 100644
index 00000000..2f901276
--- /dev/null
+++ b/app/views/admin/asset_collections/new.html.haml
@@ -0,0 +1,17 @@
+- title t('.title')
+
+- content_for :head do
+  = javascript_include_tag 'admin/asset_collections.js'
+
+- content_for :submenu do
+  = render 'admin/shared/menu/assets'
+
+%p= t('.help')
+
+= semantic_form_for @collection, :url => admin_asset_collections_url do |f|
+
+  = f.inputs :name => :information do
+    = f.input :name
+    = f.input :slug, :required => false
+  
+  = render 'admin/shared/form_actions', :back_url => admin_asset_collections_url, :button_label => :create
diff --git a/app/views/admin/assets/_form.html.haml b/app/views/admin/assets/_form.html.haml
new file mode 100644
index 00000000..461e1b7a
--- /dev/null
+++ b/app/views/admin/assets/_form.html.haml
@@ -0,0 +1,10 @@
+= f.inputs :name => :information do
+  = f.input :name
+  = f.input :source
+
+- if @asset.image?
+  = f.foldable_inputs :name => "#{t('formtastic.titles.preview')} #{image_dimensions_and_size(@asset)}", :class => 'preview' do
+    %li
+      .image
+        .inside
+          = image_tag(@asset.source.url(:preview))
\ No newline at end of file
diff --git a/app/views/admin/assets/edit.html.haml b/app/views/admin/assets/edit.html.haml
new file mode 100644
index 00000000..85a07282
--- /dev/null
+++ b/app/views/admin/assets/edit.html.haml
@@ -0,0 +1,15 @@
+- title t('.title')
+
+- content_for :submenu do
+  = render 'admin/shared/menu/assets'
+
+- content_for :buttons do
+  = admin_button_tag t('admin.asset_collections.edit.add_asset'), new_admin_asset_url(@collection), :class => 'add'
+
+%p= t('.help')
+
+= semantic_form_for @asset, :url => admin_asset_url(@collection, @asset), :html => { :multipart => true } do |form|
+
+  = render 'form', :f => form
+
+  = render 'admin/shared/form_actions', :back_url => edit_admin_asset_collection_url(@collection), :button_label => :update
\ No newline at end of file
diff --git a/app/views/admin/assets/new.html.haml b/app/views/admin/assets/new.html.haml
new file mode 100644
index 00000000..64b32203
--- /dev/null
+++ b/app/views/admin/assets/new.html.haml
@@ -0,0 +1,12 @@
+- title t('.title')
+
+- content_for :submenu do
+  = render 'admin/shared/menu/assets'
+
+%p= t('.help')
+
+= semantic_form_for @asset, :url => admin_assets_url(@collection), :html => { :multipart => true } do |form|
+
+  = render 'form', :f => form
+  
+  = render 'admin/shared/form_actions', :back_url => edit_admin_asset_collection_url(@collection), :button_label => :create
\ No newline at end of file
diff --git a/app/views/admin/shared/_form_actions.html.haml b/app/views/admin/shared/_form_actions.html.haml
index ad872595..342fc091 100644
--- a/app/views/admin/shared/_form_actions.html.haml
+++ b/app/views/admin/shared/_form_actions.html.haml
@@ -3,8 +3,9 @@
     %p
       - if defined?(back_url)
         = link_to escape_once('&larr;&nbsp;') + t('.back'), back_url
-      - else
-        &nbsp;
+      - elsif defined?(delete_button)
+        = delete_button
+      &nbsp;
       
   .span-12.last
     %p
diff --git a/app/views/admin/shared/_menu.html.haml b/app/views/admin/shared/_menu.html.haml
index 07856b2b..362f098d 100644
--- a/app/views/admin/shared/_menu.html.haml
+++ b/app/views/admin/shared/_menu.html.haml
@@ -1,5 +1,5 @@
 %ul#menu
   = admin_menu_item('contents', admin_pages_url)
-  = admin_menu_item('assets', '#')
+  = admin_menu_item('assets', admin_asset_collections_url)
   = admin_menu_item('settings', edit_admin_current_site_url)
   %li.clear
diff --git a/app/views/admin/shared/menu/_assets.html.haml b/app/views/admin/shared/menu/_assets.html.haml
new file mode 100644
index 00000000..ce47f91a
--- /dev/null
+++ b/app/views/admin/shared/menu/_assets.html.haml
@@ -0,0 +1,7 @@
+%ul
+  - @collections.each do |c|
+    %li{ :class => "#{'on' if @collection.id == c.id}" }
+      = link_to content_tag(:span, truncate(c.name, :length => 20)), edit_admin_asset_collection_url(c)
+
+.action
+  = link_to content_tag(:span, t('admin.asset_collections.index.new')), new_admin_asset_collection_url
\ No newline at end of file
diff --git a/config/initializers/carrierwave.rb b/config/initializers/carrierwave.rb
index 2f8e7531..1e8fa51b 100644
--- a/config/initializers/carrierwave.rb
+++ b/config/initializers/carrierwave.rb
@@ -44,5 +44,13 @@ module CarrierWave
         record.errors.add attr, options[:message] if record.send("#{attr}_integrity_error")
       end
     end
+    
+    def validates_processing_of(*attrs)
+      options = attrs.last.is_a?(Hash) ? attrs.last : {}
+      options[:message] ||= I18n.t('carrierwave.errors.processing', :default => 'failed to be processed.')
+      validates_each(*attrs) do |record, attr, value|
+        record.errors.add attr, options[:message] if record.send("#{attr}_processing_error")
+      end
+    end
   end
 end
diff --git a/config/locales/admin_ui_en.yml b/config/locales/admin_ui_en.yml
index aeb7e8a0..45d0591d 100644
--- a/config/locales/admin_ui_en.yml
+++ b/config/locales/admin_ui_en.yml
@@ -68,12 +68,16 @@ en:
         title: Listing layouts
         no_items: "There are no layouts for now. Just click <a href=\"{{url}}\">here</a> to create the first one."
         new: new layout
+      new:
+        title: New layout
 
     snippets:
       index:
         title: Listing snippets
         no_items: "There are no snippets for now. Just click <a href=\"{{url}}\">here</a> to create the first one."
         new: new snippet
+      new:
+        title: New snippet
         
     sites:
       new:
@@ -113,6 +117,24 @@ en:
         choose_file: Choose file
         choose_plain_text: Choose plain text
         
+    asset_collections:
+      index:
+        title: Asset collections
+        new: new collection
+        no_items: "There are no collections for now. Just click <a href=\"{{url}}\">here</a> to create the first one."
+      new:
+        title: New collection
+      edit:
+        help: "The collection name can be updated by clicking it. Uploading several files at once is possible, just click on the 'upload files' button at the right corner."
+        add_asset: add asset
+        destroy: remove collection
+        no_items: "There are no assets for now. Just click <a href=\"{{url}}\">here</a> to create the first one."
+        
+    assets:
+      new:
+        title: New asset
+      
+              
   formtastic:
     titles:
       information: General information
@@ -126,6 +148,7 @@ en:
       membership_email: Account email
       file: File
       preview: Preview
+      options: Advanced options
     labels:
       theme_asset:
         new:
diff --git a/config/routes.rb b/config/routes.rb
index 0f796d9b..347b23ea 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -38,9 +38,14 @@ Locomotive::Application.routes.draw do |map|
     resources :memberships
     
     resources :theme_assets
+    
+    resources :asset_collections
+
+    resources :assets, :path => "asset_collections/:collection_id" 
+    
   end
   
-  # magic url
+  # magic urls
   match '/' => 'pages#show'
   match '*path' => 'pages#show'
 end
diff --git a/doc/TODO b/doc/TODO
index 703c1779..750b9105 100644
--- a/doc/TODO
+++ b/doc/TODO
@@ -41,9 +41,14 @@ x domain scoping when authenticating
   x can not replace a javascript by a stylesheet
   - disable version if not image
 - asset collections
+  x create / update
+  x sort assets
+  x removing assets
   - assets
+  - destroy
   - custom resizing
-
+- assets uploader:
+  - remove old files if new one
 
 BACKLOG:
 - liquid rendering engine
diff --git a/lib/core_ext.rb b/lib/core_ext.rb
index d4893e31..22dc5ed9 100644
--- a/lib/core_ext.rb
+++ b/lib/core_ext.rb
@@ -21,7 +21,7 @@ class String
     # Turn unwanted chars into the seperator
     s.gsub!(/[^a-zA-Z0-9\-_\+\/]+/i, options[:sep])
     # Underscore
-    s.gsub!(/[\-]/i, '') if options[:underscore]
+    s.gsub!(/[\-]/i, '_') if options[:underscore]
     s
   end
   
diff --git a/public/javascripts/admin/asset_collections.js b/public/javascripts/admin/asset_collections.js
new file mode 100644
index 00000000..6ffba1be
--- /dev/null
+++ b/public/javascripts/admin/asset_collections.js
@@ -0,0 +1,50 @@
+$(document).ready(function() {
+	
+	// automatic slug from snippet name
+	$('#asset_collection_name').keypress(function() {
+		var input = $(this);
+		var slug = $('#asset_collection_slug');
+	
+		if (!slug.hasClass('filled')) {
+			setTimeout(function() {
+				slug.val(input.val().replace(/\s/g, '_').toLowerCase());
+			}, 50);
+		}
+	});
+	
+	$('#asset_collection_slug').keypress(function() { $(this).addClass('filled'); });
+	
+	// sortable assets
+	
+	var updateAssetsOrder = function() {
+		var list = $('ul.assets.sortable');
+		var ids = jQuery.map(list.sortable('toArray'), function(e) { 
+			return e.match(/asset-(\w+)/)[1];
+		}).join(',');
+		$('#asset_collection_assets_order').val(ids || '0');
+	}
+	
+	$('ul.assets.sortable').sortable({
+		items: 'li.asset',
+		stop: function(event, ui) { updateAssetsOrder(); }
+	});
+	
+	$('ul.assets.sortable li div.actions a.remove').click(function(e) {
+		if (confirm($(this).attr('data-confirm'))) {
+			$(this).parents('li').remove();
+			
+			updateAssetsOrder();
+		
+			if ($('ul.assets li.asset').size() == 0) $('p.no-items').show();
+	
+			$('ul.assets li.last').removeClass('last');
+			var i = parseInt($('ul.assets li.asset').size() / 6);
+			while (i > 0) {
+				$('ul.assets li.asset:eq(' + (i * 6 - 1) + ')').addClass('last');
+				i--;
+			}
+		}
+		e.preventDefault();
+		e.stopPropagation();
+	});
+});
\ No newline at end of file
diff --git a/public/javascripts/admin/pages.js b/public/javascripts/admin/pages.js
index 507d6919..85d9e3cc 100644
--- a/public/javascripts/admin/pages.js
+++ b/public/javascripts/admin/pages.js
@@ -38,7 +38,7 @@ $(document).ready(function() {
 		
 		if (!slug.hasClass('filled')) {
 			setTimeout(function() {
-				slug.val(input.val().replace(' ', '_')).addClass('touched');
+				slug.val(input.val().replace(/\s/g, '_').toLowerCase()).addClass('touched');
 			}, 50);
 		}
 	});
diff --git a/public/javascripts/admin/snippets.js b/public/javascripts/admin/snippets.js
index 94208609..c66f8077 100644
--- a/public/javascripts/admin/snippets.js
+++ b/public/javascripts/admin/snippets.js
@@ -7,7 +7,7 @@ $(document).ready(function() {
 	
 		if (!slug.hasClass('filled')) {
 			setTimeout(function() {
-				slug.val(input.val().replace(' ', '_').toLowerCase());
+				slug.val(input.val().replace(/\s/g, '_').toLowerCase());
 			}, 50);
 		}
 	});
diff --git a/public/stylesheets/admin/formtastic_changes.css b/public/stylesheets/admin/formtastic_changes.css
index 246d6e0e..001993a4 100644
--- a/public/stylesheets/admin/formtastic_changes.css
+++ b/public/stylesheets/admin/formtastic_changes.css
@@ -426,7 +426,7 @@ form.formtastic fieldset.preview li .inside {
 	text-align: center;
 }
 
-form.formtastic fieldset.preview li img {   }
+form.formtastic fieldset.preview li img { }
 
 
 /* ___ main error message ___ */