blueprint-typography-body([$font-size]) 的正确用法是什么？
最近转换为 RoR，我一直在使用 Compass w/ Blueprint 来深入研究众所周知的水池。 Compass 非常棒，但我在 Typography 库中发现了一些奇怪的东西。
blueprint-typography-body mixin 包含以下内容：
=blueprint-typography-body($font-size: $blueprint-font-size)
line-height: 1.5
+normal-text
font-size: 100% * $font-size / 16px
我的问题围绕“字体大小”。我有点迷失了，因为我希望传递字体大小并在页面加载时反映该大小。然而，在这种情况下，公式似乎规定了相对于默认字体的百分比。
即：
+blueprint-typography-body(10px) //produces 7.5px off of the default font size of 12px from what I can tell.
本质上，我很好奇除了明确声明“font-size：10px”之外，Compass 中是否有设置字体大小的标准。
注意：我倾向于 Blueprint/Compass 字体样式的原因是行高、字体和颜色的标准化。
Recent convert to RoR and I've been using Compass w/ Blueprint to dip into the proverbial pool. Compass has been fantastic, but I've come across something strange within the Typography library.
The blueprint-typography-body mixin contains the following:
=blueprint-typography-body($font-size: $blueprint-font-size)
line-height: 1.5
+normal-text
font-size: 100% * $font-size / 16px
My question revolves around "font-size." I'm a bit lost, as I would expect to pass in a font size and have that size reflected upon page load. However, in this scenario the formula seems to dictate a percentage against the default font.
ie:
+blueprint-typography-body(10px) //produces 7.5px off of the default font size of 12px from what I can tell.
In essence, I'm curious if there is a standard to setting font size within Compass other than explicitly declaring "font-size: 10px".
Note: The reason I'm leaning towards Blueprint/Compass font stylings is due to the standardization of line-heights, fonts and colors.
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老实说，蓝图排版的指南针端口尚未完全可配置。因此，更改默认值可能不会给您提供适当的字体节奏。
然而，susy 的下一个版本有一个完全可配置的垂直节奏模块，我帮助构建了它，它非常好。
Susy
垂直节奏模块
To be honest, the compass port of the blueprint typography is not fully configurable yet. So changing that default is probably not going to give you a proper font rhythm.
However, The next release of susy has a fully configurable vertical rhythm module that I helped build and it's pretty nice.
Susy
Vertical Rhythm Module
只需阅读 Compass 文档 的讨论（Julio Antúnez 的评论）即可调整字体像这样的尺寸：
不确定这是推荐的方式，但它对我有用。我刚刚开始使用指南针和指南针。上面的蓝图可能会在其他地方引起问题。
Just read in the discussion on Compass documentation (Julio Antúnez's comment) that you can adjust font sizes like this:
Not sure this is recommended way but it works for me. I just started using Compass & Blueprint so above might cause problems elsewhere.