HTML标签是什么
HTML，全称Hypertext Markup Languag，也就是“超文本链接标示语言”
HTML文本是由 HTML下命令共同组成的叙述性文本，HTML 下命令也可以表明那些文字、 图形、动画、声、表格、链接等， 即平时上网吧所看到网页。
部分设计 HTML 语言和文字的目的是为了能把存放在一台电脑中的文本或图形与另一台电脑中的文本或图形更方便地联系在一同，形成有机的总体，人们不需要需要考虑具体内容相关信息是在现阶段电脑上还是在互联网的其它电脑上。这样的，你只须以及使用鼠标在某一文档中点取一个图标，Internet就会马上转到与此图标相关的其他内容上来，而这些相关信息可能会储存在互联网的另一台电脑中。
SEO任务中，需要的代码相关的知识最多的是 HTML 标签，其实做SEO也就只需懂得 HTML 标签只需。
做SEO需了解哪些HTML标签
再打开SEO十万个为什么：https://www.web176.com/faq/ 查询源代码。
如图所示：
图上划出的是 HTML 标签：蓝色一部分是文章标题标签，蓝色一部分是最关键词标签，同学们肯定要把这些其他内容识记住。
HTML 标签相关的知识点
1、HTML 标签被 < 和 > 象征符号被包围。
2、这些包围的象征符号叫作尖括号。
3、HTML 标签是成对出现的
4、位于初始标签和中止标签之间的文本是HTML元素的其他内容。
5、HTML 标签对其大小写不敏感，
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