docs: def full_width_svg(url, width, height, alt_text=None):
      ''' Helper to render an SVG that will size to fill
          its element while keeping its dimentions.
  
          '''
  
      return {
          'ratio': str((float(height)/float(width))*100)[:2],
          'url': url,
          'alt_text': alt_text
      }