title: Selenium (with python) how to modify an element css style
body: <p>I'm trying to change CSS style of an element (example: from <code>"visibility: hidden;"</code> to <code>"visibility: visible;"</code>) using selenium <code>.execute_script</code>. (any other method through selenium+python would be accepted gracefully).</p>
  
  <p>my code:</p>
  
  <pre><code>driver = webdriver.Firefox()
  driver.get("http://www.example.com")
  
  elem = driver.find_element_by_id('copy_link')
  
  elem.execute_script(  area of my problem )
  </code></pre>
  
  <p>what do i need to do in order to play with the CSS of the webpage ?</p>