registerCss() public method
Registers a CSS code block.
public void registerCss ( $css, $options = [], $key = null )$css string
The content of the CSS code block to be registered $options array
The HTML attributes for the <style>-tag. $key string
The key that identifies the CSS code block. If null, it will use $css as the key. If two CSS code blocks are registered with the same key, the latter will overwrite the former.