| <!doctype html> | |
| <title>CSS test reference</title> | |
| <style> | |
| * { | |
| margin: 0; | |
| padding: 0; | |
| box-sizing: border-box; | |
| } | |
| html, body { | |
| width: 100%; | |
| height: 100%; | |
| } | |
| body { | |
| padding: 20px; | |
| position: relative; | |
| } | |
| .parent { | |
| border: 3px solid green; | |
| position: absolute; | |
| height: 60vh; | |
| } | |
| .parent img { | |
| height: calc(60vh - 6px); | |
| } | |
| </style> | |
| <div class="parent"> | |
| <img src="/images/blue96x96.png"> | |
| </div> |