What I want is to be able to shrink or enlarge the background-image so the image is stable at 20% no matter what the screen size is. Here is my CSS code:
That code is a silly mess. -Do NOT put the quotes in url(). -top: 0%; does not exist. -height: 20%; makes no sense at all. Just make the position fixed, and add width and height 100%;
My css heading is not the topic. Only how it pertains to the topic. Is it possible to fit the same full image.jpg to the top 20% at all times no matter what the screen or browser size?
Why don't you just make the height in pixels then? If the top 20% is 400px, just say 'height: 400px;'.