初始子元素将充满整个容器，占据全部可用空间，底部不留间隙，同时继承父级圆角设定；容器本身也完全展开，充满可用区域。
华裔内容创作者朱溪瑞：打破刻板印象 展现多元中国
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There's no sign of that kind of seismic shift now, especially not in these perilous unpredictable days.