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How to use html !DOCTYPE tag

silencementOriginal: 2019-05-27 09:27:103634browse

##HTML 1a309583e26acea4f04ca31122d8c535




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1a309583e26acea4f04ca31122d8c535 declaration must be the first line of the HTML document, located at

1a309583e26acea4f04ca31122d8c535 declaration is not an HTML tag; it is an instruction to the web browser as to which version of HTML the page should be written in.

Always add the 1a309583e26acea4f04ca31122d8c535 declaration to your HTML document so the browser knows the document type.

Several methods of layout reference

Three types:

1, connect to an external style sheet: fbab1575af9d8f9d5951e2523fa266b4(Add to the head part)

2, create an embedded style sheet: Create a style element in the head part of HTML , directly write the style rules

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img{border:8px solid red;

}531ac245ce3e4fe3d50054a55f265927

3, apply inline style: add a style directly within the element (such as)

0ff8a0563fe9c381edc0c05377c6a178

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