docs: function move_up(object, upside, new_name)
  {
  	let prefix
  
  	if (upside)
  	{
  		upside[new_name] = object
  		prefix = `${new_name}_`
  	}
  	else
  	{
  		upside = object
  		prefix = ''
  	}
  
  	for (let key of Object.keys(object))
  	{
  		const child_object = object[key]
  
  		if (is_object(child_object) && !is_pseudo_class(key) && !is_media_query(key))
  		{
  			delete object[key]
  			move_up(child_object, upside, `${prefix}${key}`)
  		}
  	}
  }