Bootstrap块引用

<blockquote>
   <p>This is a default blockquote example. This is a default 
      blockquote example. This is a default blockquote 
      example.This is a default blockquote example. This is a 
      default blockquote example.</p>
</blockquote>

<blockquote>
   This is a blockquote with a source title.
   <small>Someone famous in <cite title = "Source Title">Source Title</cite></small>
</blockquote>

<blockquote class = "pull-right">This is a blockquote aligned to the right.
   <small>Someone famous in <cite title = "Source Title">Source Title</cite></small>
</blockquote>