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。
Assume the default base font of 16px has been reduced to 62.5% for the body selector, shown in Listing 4.
假设正文选择器的默认基本字体16px变为原来的62.5%，如清单4所示。
The majority of these cases are handled by the base widgets. For example, a text field will resize automatically to accommodate a larger font, or autoscroll if necessary.
这些情况的大多数是由基本窗口构件（widget）处理的；例如，文本域将自动调整大小以适应较大的字体，如果需要也可以自动滚动。
As shown in Listing 4, at the top of our base stylesheet (base.css) we defined the styles, including the font size.
如清单4所示，我们在基本样式表(base . css)的顶部定义了样式，包括字体大小。
Now the header is set to a height of 200 pixels, features text that is very large (about 250% of the base font size) and displays a bright yellow color.
现在页眉已经设置到了200像素的高度，显示的文本非常大，(大概是基本的字体大小的百分之250)而且显示了一个明亮的黄色。
The more popular method is to set your font-size for the whole document, then, base everything on a relative size from there.
一个更通用的方法是在为整个文章设置字体大小，然后从那儿将每个部分字体以一个相关的大小为基础。
However, the base of realizing the goal is to convey in way of font typesetting.
而要完成这个目标的基础是很好的运用字体排版将信息完善的传达给读者。
The font size is one size smaller than the base font size.
字体大小比基准字体大小小一号。
Sets a base font value to be used as the default font when rendering text.
设置显示文本时作为默认字体的基础字体值。
Each item and I just retrieve the font name from the base class, create a font object with the name, I draw the text, restore the previous font and voila.
每一个项目，我只是从该基类的字体名称，创建一个名为字体对象，我绘制文本，恢复以前的字体，瞧。
This example USES the BASEFONT element to set the base font size, and the font element to temporarily override it.
下面的例子使用BASEFONT元素来设置基础字体大小，而FONT元素用来临时覆盖此设置。
The autoscaling base size is used by the form as a baseline for comparison to the system's font size to determine how much to scale the form when autoscaling is used.
窗体将自动缩放基大小用作与系统的字号进行比较的基准，以确定使用自动缩放时窗体的缩放量。
The autoscaling base size is used by the form as a baseline for comparison to the system's font size to determine how much to scale the form when autoscaling is used.
窗体将自动缩放基大小用作与系统的字号进行比较的基准，以确定使用自动缩放时窗体的缩放量。
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