text: <style>
    .bar:hover {
      fill: brown;
    }
  </style>
  <body>
    <script>
      const dataset = [12, 31, 22, 17, 25, 18, 29, 14, 9];
  
      const w = 500;
      const h = 100;
  
      const svg = d3.select("body")
                    .append("svg")
                    .attr("width", w)
                    .attr("height", h);
  
      svg.selectAll("rect")
         .data(dataset)
         .enter()
         .append("rect")
         .attr("x", (d, i) => i * 30)
         .attr("y", (d, i) => h - 3 * d)
         .attr("width", 25)
         .attr("height", (d, i) => 3 * d)
         .attr("fill", "navy")
         
         // Add your code below this line
         .attr("class", "bar")
  
  
         // Add your code above this line
  
      svg.selectAll("text")
         .data(dataset)
         .enter()
         .append("text")
         .text((d) => d)
         .attr("x", (d, i) => i * 30)
         .attr("y", (d, i) => h - (3 * d) - 3);
  
    </script>
  </body>
  