After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：Frames in HTML
HTML中的框架 frameset：定义框架结构的标签，可以将浏览器窗口分割成框架 rows/cols：的值规定了每行或每列占据屏幕的面积 值用的% px * frame：标签定义了放置在每个框架中的HTML文档 noresize：使框架边框不可拖动
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