Across the site, sr.ht uses a consistent Markdown syntax based on Python's [Markdown](https://pypi.python.org/pypi/Markdown) package, which implements John Gruber's [original Markdown specification](https://pypi.python.org/pypi/Markdown). We then post-process the HTML to strip out unwanted tags and attributes. ## Tags - `a` - `abbr` - `acronym` - `b` - `blockquote` - `code` - `div` - `dd` - `dl` - `dt` - `em` - `h1`, `h2`, `h3`, `h4`, `h5` - `i` - `img` - `input` - `li` - `ol` - `p` - `pre` - `span` - `strong` - `table` - `tbody` - `thead` - `td` - `th` - `tr` - `ul` ## Attributes We allow the `id` attribute on `h*` tags and the `class` attribute on all tags - the only permitted values of `class` are: - `row` - `col-md-*` - `form-control` You may also specify the `style` tag, for which you may specify the following attributes: - `margin` - `padding` - `text-align` - `font-weight` - `text-decoration` `input` elements may specify `type='checkbox'` as well as the `checked` attribute. `a` tags may specify `href` and `title`. `abbr` and `acronym` tags may specify `title`.