EM rockets base 脉冲火箭
base em bastão 粉底膏
Within this article, I show how em is relative to the base font you can set, while px is absolute to the base font based on the visual display of an object on the screen.
在本文中，我将展示根据对象在屏幕上的可见显示，为何em对于可设置的基本字体是相对的，而px对于基本字体是绝对的。
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