After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：HTML attributes
ctrl+/：注释
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Courses in the relevant section：Tables in HTML
cellspacing是设置表格与表格之间的间距
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Courses in the relevant section：Simple table layout in HTML
rowspan横跨列数，colspan横跨行数
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Courses in the relevant section：Blocks in HTML
块级元素通常会以新的一行开始（和结束）
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