语法规则决定了文本中一个模块对另一个模块的作用。
The grammatical rules determine the effect of one chunk of text on another.
这个规则将文本颜色设置为黄色,同时将其背景设置为蓝色和白色。
This rule makes the text yellow, but it also gives it a blue and white background.
这里的最后三个样式规则对齐文本并应用样式,还为代表下拉列表的嵌入元素提供新的背景图像。
The last three styling rules shown here align and style the text and provide new background images for the embedded items that represent the drop-down lists.
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