If you only want the regular button to have blue text, then the CSS would look like Listing 9.
如果只需要让常规的按钮具有蓝色的文本，那么这个CSS就应该类似于清单9。
Listing 9 is the HTML and associated CSS to build the four-column layout pictured in Figure 4.
清单9是用于构建如图4所示的四列布局的HTML和相关的CSS。
Figure 9 shows the nifty Firebug feature of live editing of CSS boxes.
图9展示了能即时编辑css盒的奇妙的firebug特性。
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