anchor.diff:      align: center
   
   |font_color
  -|<<colors,Color>>
  +|<<colors,Color>> +
  +(default: _inherit_)
   |sidebar:
     title:
       font_color: #333333
   
   |font_family
  -|<<fonts,Font family name>>
  +|<<fonts,Font family name>> +
  +(default: _inherit_)
   |sidebar:
     title:
       font_family: Noto Serif
   
   |font_size
  -|<<values,Number>>
  +|<<values,Number>> +
  +(default: _inherit_)
   |sidebar:
     title:
       font_size: 13
  
positive.code:   border_width: 0.75
  
  |font_color
  |<<colors,Color>>
  |code:
    font_color: #333333
  
  
negative.code: 
  |border_radius
  |<<values,Number>> +
  (default: _not set_)
  |example:
    border_radius: 4
  
  