4 thẻ phải được sử dụng trong tất cả các tài liệu HTML là gì?

HTML can be expanded as Hypertext Markup Language, which is commonly used for the web based application development processes. It operates as a plain text file that can hold a variety of tags based on the requirement set for the said application. Tags in HTML can be defined as a means for instructing the program for modelling the web page. A few of the basic tags that can be seen in almost all the HTML documents are , , , , ,

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