code: @Nonnull
    public CSSRect setBottom (@Nonnull @Nonempty final String sBottom)
    {
      ValueEnforcer.notEmpty (sBottom, "Bottom");
  
      m_sBottom = sBottom;
      return this;
    }
docs: Set the bottom coordinate.
  
  @param sBottom
  May neither be <code>null</code> nor empty.
  @return this