Method: Sets the CSS to merge with the HTML.

Method: Renders the normalized and processed HTML.

Method: Renders the content of the BODY element of the normalized and processed HTML.

Method: Eliminates any invalid closing tags for void elements from the given HTML.

Method: Returns the BODY element.

Method: Returns the HEAD element.

Method: Applies $this->css to the given HTML and returns the HTML with the CSS applied.

Method: Applies $this->css to the given HTML and returns only the HTML content within the tag.

Method: Checks that some HTML has been set, and throws an exception otherwise.

Method: Creates a DOM document from the given HTML and stores it in $this->domDocument.