>>/11820/
>>/11821/
Hello!
Sorry for late reply.
1. you need an image uploaded to somewhere
2. you need the uploaded image's url
3. you have to create a file that contains the rules and name it: custom.css
You already did the first point, you uploaded the image in this post >>/11820/
You need the url of the image which is:
https://endchan.gg/.media/869459fc7013c39b00fa82882e6dc1f8-imagejpeg.jpg
So now only the rules are missing. I experimented a bit and this could be the most acceptable:
body {
background-image: url(https://endchan.gg/.media/869459fc7013c39b00fa82882e6dc1f8-imagejpeg.jpg);
background-repeat: repeat-y;
background-size: contain;
}
So copypaste it into a file and save it with the name custom.css
Then in the board setting browse the file, then click "Upload CSS"
It should warn you that a new css has been set. Check the board if you see the new background. If not something is amiss.