anchor.diff:  form
     //:vertical-align bottom
   .text
  -  border: 1px solid #999
  +  border: 1px solid var(--form-element-border-color)
     font-size: 18px
     width: 360px
  -  background-color: #fafafa
  +  background-color: var(--background-color)
     margin-left: 50px
   textarea.text
     height: 52px
  
positive.code:   font-size: 90%
    table.version
      border-collapse: collapse
      border-bottom: 1px solid #ddd
      td
        padding: 5px
      td.first
  
negative.code:         max-width: $width - 30px
          max-height: $width - 30px
          border-radius: 5px
          box-shadow: 1px 1px 2px var(--form-element-border-color)
        video
          max-width: $width - 30px
          max-height: $width - 30px
          box-shadow: 1px 1px 2px var(--form-element-border-color)
  
    .text
      font-size: 18px
  