title: Test Slider in Selenium with only one element like volume control
body: <p>I need to test a slider with only one element in selenium (c#). Something like the volume or brightness control.
  I have searched on-line and all I could find was with two elements (with Source &amp; Target).
  I tried many functions and none of them are working.</p>
  
  <pre><code>Actions move = new Actions(driver);
  move.DragAndDropToOffset(driver.FindElement(By.Id("someid")), 39, -9).Perform();
  </code></pre>
  
  <p>Can anyone please help me with this? I'm completely new to Selenium and c#.
  Let me know if I need to provide more details.
  Thanks</p>