title: Change Jupyter notebook version 4.x+ logo
body: <p>In IPython notebook version <code>2.x</code>, you can add logo by customizing folder <code>.ipython/profile_name/static/base/images/logo.png</code> and it will display the custom logo that we made on the header of the notebook.</p>
  
  <p>In Jupyter notebook version <code>4.x</code>, we know that they move directory to <code>.jupyter/</code> instead i.e. <code>.jupyter/base/</code> and <code>.jupyter/custom/custom.css</code>. However, when I try to customize default profile in <code>~/.jupyter/base/images/logo.png</code>, I couldn't custom the logo anymore.</p>
  
  <p>The question is: How to custom logo in Jupyter notebook version <code>4.x</code>. I'm wondering if there is a solution to custom Jupyter notebook logo (version <code>4.x</code>) or not. I put example snapshot of customized notebook logo in previous version <code>2.x</code> below.</p>
  
  <p><a href="https://i.stack.imgur.com/7FCLU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7FCLU.png" alt="example"></a></p>