all repos — h3rald @ fff94e5604bd922aefe055306d69d269edfcd4ae

The source code of the h3rald.com web site.

contents/subweb/subhtml.md

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-----
id: subhtml 
title: SubHTML Specification
content-type: page
-----

### Document Structure and Metadata

A SubHTML document MUST be structured using respecting the following tag hierarchy:

```html
<!DOCTYPE html>
<html>
  <head>
    <title>A SubWeb web site</title>
    <base href="/" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="/styles.css">
  </head>
  <body>
  </body>
</html>
```

#### DOCTYPE

A document MUST have the following DOCTYPE declaration before the `<html>` element:

```html
<!DOCTYPE html>
```

#### Comments

A document MAY contain comments delimited by `<!--` and `-->`, which can be placed within any elements and span multiple lines.

#### html

A document MUST be wrapped in a single `<html>` element.

This element MAY have a `lang` attribute defining the main language of the document as defined by [RFC 5646](https://datatracker.ietf.org/doc/html/rfc5646).

#### head

This element defines the header of the document and MAY contain metadata and links to external stylesheets.

#### base

#### title

#### meta

#### link

#### body

### Block Elements

#### blockquote

#### br

#### div

#### h1-h6

#### hr

#### p

#### pre

#### small

#### sub

#### sup


### Inline Elements

#### a

#### code

#### em

#### span

#### strong


### Lists

#### dd

#### dl

#### dt

#### li

#### ol

#### ul


### Forms

#### button

#### fieldset

#### form

#### input 

#### label

#### optgroup

#### option

#### select 

#### textarea


### Tables

#### table

#### td

#### th

#### tr

### Common Attributes

#### accesskey 

Specifies a keyboard shortcut to activate or focus an element.

#### aria-* 

Defines accessibility properties and states for assistive technologies.

#### class 

Specifies one or more CSS class names for styling the element.

#### dir 

Sets the text direction (left-to-right, right-to-left, or auto).

#### id 

Defines a unique identifier for the element within the document.

#### lang 

Specifies the primary language of the element’s content.

#### role 

Defines the element’s semantic role for accessibility.

#### tabindex 

Controls keyboard navigation order and focusability.

#### title 

Provides advisory information displayed as a tooltip.