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<html><head><style>#example1 { border: 2px solid black; padding: 25px; background: url(mountain.jpg); background-repeat: no-repeat; background-size: contain;}</style></head><body><h2>background-size: contain:</h2><div id="example1"> <h2>Hello World</h2> <p>The background image is resized to make sure the image is fully visible.</p></div></body></html>