welcome css改标点错误

Gemfile

@@ -6,7 +6,6 @@ unless RUBY_PLATFORM =~ /w32/
   gem 'rubyzip'
   gem 'zip-zip'
 end
-gem 'thin'
 gem 'seems_rateable', path: 'lib/seems_rateable'
 gem "rails", "3.2.13"
 gem "jquery-rails", "~> 2.0.2"

Gemfile.lock

@@ -40,9 +40,7 @@ GEM
     arel (3.0.2)
     builder (3.0.0)
     coderay (1.0.9)
-    daemons (1.1.9)
     erubis (2.7.0)
-    eventmachine (1.0.3)
     fastercsv (1.5.0)
     hike (1.2.3)
     i18n (0.6.1)
@@ -93,10 +91,6 @@ GEM
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
-    thin (1.5.1)
-      daemons (>= 1.0.9)
-      eventmachine (>= 0.12.6)
-      rack (>= 1.0.0)
     thor (0.18.1)
     tilt (1.4.1)
     treetop (1.4.14)
@@ -123,4 +117,3 @@ DEPENDENCIES
   rdoc (>= 2.4.2)
   ruby-openid (~> 2.1.4)
   seems_rateable!
-  thin

public/stylesheets/welcome.css

@@ -1,4 +1,4 @@
- 
+ /*
   * 再添加的时候按照功能划分区块，随便加的被删掉自负
   */
  /************************** 某部分开始 *****************************/
@@ -290,7 +290,7 @@ div#tooltip::after {
      background-color: #FCE6EA;
      text-decoration: none;
      border-top: 1px solid #FFFFFF;
-     border-left: 1px solid #FFFFFF:
+     border-left: 1px solid #FFFFFF;
      border-bottom: 1px solid #717171;
      border-right: 1px solid #717171;
 }