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src/site/_includes/language-tour/3-built-in-types/strings.html

Index: src/site/_includes/language-tour/3-built-in-types/strings.html
diff --git a/src/site/_includes/language-tour/3-built-in-types/strings.html b/src/site/_includes/language-tour/3-built-in-types/strings.html
index c5bae1be4ad469a058abf8d162e886ca581aba04..45203dc073f1f9a5bc1123f34e4179cadb021ae8 100644
--- a/src/site/_includes/language-tour/3-built-in-types/strings.html
+++ b/src/site/_includes/language-tour/3-built-in-types/strings.html
@@ -27,13 +27,15 @@ assert('That deserves all caps. ${s.toUpperCase()} is very handy!' ==
        'That deserves all caps. STRING INTERPOLATION is very handy!');
 {% endhighlight %}
 
-<aside class="note">
-<b>Note:</b>
-The <b>==</b> operator tests whether
-two objects are equivalent.
-In the case of strings,
-they're equivalent
-if they have the same characters.
+<aside>
+  <div class="alert alert-info">
+    <strong>Tip:</strong>
+    The <b>==</b> operator tests whether
+    two objects are equivalent.
+    In the case of strings,
+    they're equivalent
+    if they have the same characters.
+  </div>
 </aside>
 
 <p>
@@ -129,6 +131,8 @@ Learn more about
 <a href="/docs/library-tour/#strings-and-regular-expressions">string methods</a>
 in the library tour.
 
+</section>
+
 <section id="strings-buffer">
 <h4> StringBuffer methods </h4>
 
@@ -156,12 +160,13 @@ sb.clear();  // All gone!
 assert(sb.toString() == '');
 {% endhighlight %}
 
-<br>
-<aside class="note">
-<b>Note:</b>
-StringBuffers are currently slow when compiled to JavaScript.
-See bug #<a href="http://code.google.com/p/dart/issues/detail?id=1216">1216</a>
-for details.
+<aside>
+  <div class="alert alert-info">
+    <strong>Tip:</strong>
+    StringBuffers are currently slow when compiled to JavaScript.
+    See bug #<a href="http://code.google.com/p/dart/issues/detail?id=1216">1216</a>
+    for details.
+  </div>
 </aside>
 
 </section>