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<html><head><style>div { background-color: lightblue; border: solid black 1px; width: 100px; block-size: 200px;}</style></head><body><h1>The block-size Property</h1><div></div></body></html><html><head><style>div { background-color: lightblue; border: solid black 1px; width: 100px; block-size: 200px;}</style></head><body><h1>The block-size Property</h1><div></div></body></html>