MediaWiki:Common.css

Note: After publishing, you may have to bypass your browser's cache to see the changes.

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• Google Chrome: Press Ctrl-Shift-R (⌘-Shift-R on a Mac)
• Edge: Hold Ctrl while clicking Refresh, or press Ctrl-F5.

.mw-body {
	background-image: 
		linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.5)), /* overlay */
		url('/wiki/assets/bg.jpeg'); /* your image */
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
}