anchor.diff:                                  //make next step visible
                                   $('#four').css({opacity: '1'});
                                   <!--Prep the data for D3 -->
  -                                var categoryNames = ['Opportunity Cost at Current Wage', 'Housing Cost', 'Financing Cost', 'Tuition / Wage Garnishing'];
  +                                var categoryNames = ['Opportunity Cost at Current Wage', 'Financing Cost', 'Housing Cost', 'Tuition / Wage Garnishing'];
                                   bootcamps.forEach(function (camp) {
                                       var x0 = 0;
                                       if (camp.cities.indexOf(city) > -1) {
  
positive.code:                                         .enter().append("g")
                                          .attr("class", "series")
                                          .attr("transform", function (d) {
                                              return "translate(0," + yScale(d.name) + ")";
                                          });
                                  ;
                                  selection.selectAll("rect")
                                          .data(function (d) {
                                              return d.mapping;
                                          })
                                          .enter().append("rect")
                                          .attr("width", function (d) {
                                              return xScale((d.x1) - (d.x0));
                                          })
                                          .attr("x", function (d) {
                                              return xScale(d.x0);
                                          })
                                          .attr("height", yScale.rangeBand())
                                          .style("fill", function (d) {
                                              return color(d.label);
                                          })
  
negative.code:                                             left: 140
                                          },
                                          width = 800 - margin.left - margin.right,
                                          height = 1200 - margin.top - margin.bottom;
                                  var barHeight = 20;
                                  var xScale = d3.scale.linear()
                                          .domain([0, xStackMax])
                                          .rangeRound([0, width]);
                                  var y0Scale = d3.scale.ordinal()
                                          .domain(bootcamps.map(function (d) {
                                              return d.name;
                                          }))
                                          .rangeRoundBands([0, height], .1);
                                  var y1Scale = d3.scale.ordinal()
                                          .domain(categoryNames).rangeRoundBands([0, y0Scale.rangeBand()]);
                                  var color = d3.scale.ordinal()
                                      .range(["#215f1e", "#5f5c1e", "#1e215f", "#5c1e5f"])
                                      .domain(categoryNames);
                                  var svg = d3.select("svg")
                                          .attr("width", width + margin.left + margin.right)
                                          .attr("height", height + margin.top + margin.bottom)
  