Paolo

Hello, I created an image spoiler and I would like to remove the right arrow and leave only the image to click. 

I show you the picture: 

Here's the code: 

<center>
<h1>
PASCAL LOTA</h1>
<details>
  <summary><img src="https://1.bp.blogspot.com/-Gqx6lkmLq_k/XoiKBHj5L9I/AAAAAAAAAi8/gohuLTm_RI8mHLSn5acQTeonA7RYSGyrwCLcBGAsYHQ/s1600/System%2Brequirements.png" /></summary>
   - by Refsnes Data. All Rights Reserved.<br />

  All content and graphics on this web site are the property of the company Refsnes Data.<br />

</details>
</center>

Thank you for your help!