title: jupyter notebook markdown code cell background color
body: <p>If I write code block in a text cell with code quote as below</p>
  
  <pre><code>```java
  //some code here
  ```
  </code></pre>
  
  <p>Can I change the code block background color to light grey for all such code cells?</p>
  
  <h1>Update[10/12/19]</h1>
  
  <p>per @vi_rises's comments, if using jupyter, then config file path is:</p>
  
  <pre><code>.jupyter/custom/custom.css
  </code></pre>
  
  <p>Add below content will change text line background color:</p>
  
  <pre><code>.rendered_html code.language-java {
      background-color: #e5e5e5;
  }
  </code></pre>
  
  <p>markdown cell text:
  java code section start</p>
  
  <pre><code>```java
  /* HelloWorld.java
   */
  
  public class HelloWorld
  {
      public static void main(String[] args) {
          System.out.println("Hello World!");
      }
  }
  ```
  
  java code section end
  </code></pre>
  
  <p>The output looks like below:
  <a href="https://i.stack.imgur.com/BhSDHm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BhSDHm.png" alt="enter image description here"></a></p>
  
  <p>I wish to whole java code rectangle area if it's possible!</p>