Issues with background (finally figured out)

[Huwey]

I am trying to use background-image and it is just not working at all for me. No image is showing up. I have the image now in the same folder as the html file (css is currently being embedded into the html file) and also in a folder named images

I have tried both of these approaches and it doesn't work. Please help
body {
margin: 2em;
font: 16px -apple-system, sans-serif;
line-height: 1.333em;<br>
background-image: url("../images/animated_cow.gif");

}

and

body {
margin: 2em;
font: 16px -apple-system, sans-serif;
line-height: 1.333em;<br>
background-image: url("animated_cow.gif");

}