background image working in CSS preview but not on profile?

i'm trying to change the background image on my profile, i've used the Spacehey CSS preview to test and it works just fine, but when i copy the exact code into my actual spacehey profile, nothing happens and i'm not sure whats going wrong >.< any help would be apprecieted :3

The code:

<style>


  body {
   background-image: url(https://i.imgur.com/oWKBmgy.jpeg);

}



</style>