XF 1.3 Fixed Background

[Crimson]

How do you set a fixed background that even when you zoom out, the background stays as is?

 

[BassMan]

Add in EXTRA.css:

/* START - Background image on forum */
@media (min-width: 1025px) {
html {
  background: url(/@imagePath/xenforo/background/your_image.png) !important;
  background-attachment: fixed !important;
  background-size: cover !important;
}
}

@media (max-width: 1025px) {
#header {
  background-color: @primaryDarker !important;
}
}
/* END - Background image on forum */

Upload your image to right folder in server and update above code to your image name.

I wanted not to show background image on my mobile, that's why there's a part of code for responsive. You can remove this if you want.

Then go to Style Properties -> General -> Body and Clear value for background colour.