Font pixel size for different operating systems and languages can change in height and width.
在不同操作系统和语言中，字体像素大小的高度和宽度都会发生变化。
What's the maximum pixel value of CSS width and height properties?
CSS的宽度和高度属性的最大像素值是什么？
The image's width and height are altered. Even if this is only by one pixel , it can make a big difference at small pixel sizes.
图像的宽度和高度改变了，即使只是一个象素，对于小象素大小字形区别都很大。
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