How to change the background of the menu bars in the mobile version?

Question

JavaScript

Hello, tell me, please, how to change the background of the cross of the opened menu?
When the screen is less than 659 px. I'm trying to make a black cross with a white/transparent background. But the closed menu should also look like 3 black stripes with a white background, like
here pen

Answer 1

@media only screen and (max-width: 659px)
  #menu-icon,
  #menu-icon:active {
    background: transparent;
  }

  #menu-icon span,
  #menu-icon:active span {
    border: 2px solid #000;
  }

}