anchor.diff:  
   var margin = { top: 20, right: 20, bottom: 30, left: 20 },
       width = 670 - margin.left - margin.right,
  -    height = 400 - margin.top - margin.bottom;
  +    height = 500 - margin.top - margin.bottom;
   
   var formatPercent = d3.format(".0%");
   
  
positive.code:     .range([0, width]);
  
  var y = d3.scale.ordinal()
      .rangeRoundBands([0, height], .25);
  
  var svg = d3.select("#chart").append("svg")
      .attr("width", width + margin.left + margin.right)
  
negative.code:       .data(data)
      .enter().append("text")
        .attr("x", function(d) { return 1; })
        .attr("y", function(d) { return y(d.category) + y.rangeBand() + 14; })
        .text(function(d) { return d.category });
  });
  
  