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。
2
A style can have any number of attributes: background color, border color, border width, border style, font color, font family, and font size.
一个样式可以有任意个属性：背景颜色、边框颜色、边框宽度、边框样式、字体颜色、字体集和字体大小。
3
This can be especially important if using the size of a particular font to approximate a certain width. It stinks to see carefully crafted navigation break to the next line.