这些指导原则往往会规定如何设置不同类型数据的格式，或文本应采用哪种颜色和字体。
The guidelines often dictate how to format different types of data or what color and font to use for text.
在这种情形中，格式实际上是基于一个规则(MDX表达式)的，基于每个单元格的数值设置不同的填充颜色。
In this case, the formatting is actually based on a rule (MDX expression), setting different fill colors based on the value in each cell.
这个HTML示例包含一个简单的样式表，它设置文档体的背景颜色、H 1标题格式和段落格式。
HTML sample showing a simple style sheet that sets body background color, H1 head format, and paragraph format.
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