|  | <!DOCTYPE html> | 
|  | <meta charset="utf-8"> | 
|  | <title>CSS Containment Test: Reference file</title> | 
|  | <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com"> | 
|  | <style> | 
|  | div { | 
|  | display: inline-flex; | 
|  | border: 5px solid green; | 
|  | /* Layout containment creates a stacking context, the following lines simuluate the same in the reference file. */ | 
|  | position: relative; | 
|  | z-index: 1; | 
|  | } | 
|  | </style> | 
|  |  | 
|  | <p>This test passes if it has the same output as the reference. You see the word "before", a 10px green square at the bottom, and then the word "after".</p> | 
|  | before<div></div>after |