HTML

 * HTML là một siêu van bản (Hyper tex Markup Language) nó có thể có cả video hình ảnh và âm thanh.

* nó là ngôn ngữ mà mọi người mới học về lập trình hướng tới.

* nó được xem là bộ khung của một trang web.

* trong HTML phần tử của đoạn văn cấu thành từ các yếu tố(element) opening tag(<p>) , content(vd"hello word"), closing tag(</p>).

*HTML bao gồm các phần tử và giữa tag và content chính là phần tử của HTML;

*các tên phần tử đc bao quanh bởi dấu "<" và ">"

* giữa các opening tag(<p>) và closing tag(</p>) có chứa nội dung(content) của phần tử HTML

* trong HTML có lệnh BODY nhờ nó ta có thể thêm hình ảnh video vào trong đó

*một ví dụ về BODY:

<body>
  <p>"life is very short and what we have to do must be done in the now."- Audre Lorde</p>
  </body>

*HTML cấu trúc giống như 1 gia đình gồm các phần tử con lồng vào phần tử mẹ

+ một ví dụ cho các thẻ lồng nhau: 

<body>
  <h1>Hello World</h1>
  <p>This paragraph is a child of the body element</p>
  <div>
    <p>This paragraph is a child of the of the div element and a grandchild of the body element</p>
  </div> 
</body>

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