<html><head><style>.flex-container { display: flex; align-items: stretch; background-color: #f1f1f1;}.flex-container > div { background-color: DodgerBlue; color: white; margin: 10px; text-align: center; line-height: 75px; font-size: 30px;}</style></head><body><h1>flex-grow 属性</h1><p>使第三个弹性项目的增长速度比其他弹性项目快八倍：</p><div class="flex-container"> <div style="flex-grow: 1">1</div> <div style="flex-grow: 1">2</div> <div style="flex-grow: 8">3</div></div></body></html>