D3 Examples - Revised and prettified bar graph

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Drug sentences in Spokane County</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.min.js"></script>
        <link rel="stylesheet" type="text/css" href="style.css">
            
        
    
    </head>
    
    
    <body>
    <h2>Spokane county drug sentences</h2>
    <p>Number of prison sentences for drug-related crimes in Spokane County, Washington</p>
    <script type="text/javascript">     
​
            var w = 500;
            var h = 300;
            var padding = [10, 10, 20, 50];
            var widthScale = d3.scale.linear()
                        .range([0,w - padding [1] - padding [3]]);
            
            var heightScale = d3.scale.ordinal()
                        .rangeRoundBands([padding[0], h-padding[2]], 0.1);
            
            var Xaxis = d3.svg.axis()
                            .scale(widthScale)
                            .orient("bottom");
                            //orientation is about label position, not axis position
                            
            var Yaxis = d3.svg.axis()
                            .scale(heightScale)
                            .orient ("left");
            
            var svg = d3.select("body").append("svg").attr("width", w).attr("height",h);
            
        
            
            d3.csv("Spokane_drug_sentences.csv", function(data) {
​
                widthScale.domain([0, d3.max(data, function(d) {
                    return +d.drug_prison;
                })]);
                
                heightScale.domain(data.map(function(d) {return d.year;} ));
                
                var rects = svg.selectAll("rect")
                    .data(data)
                    .enter()
                    .append("rect");
                    
                    rects.attr("x", padding[3])
                    .attr("y", function (d) {
                        return heightScale(d.year);
                        })
                    .attr("width", function(d){ 
                        return widthScale(d.drug_prison);
                        })
                    .attr("height", heightScale.rangeBand())
                    .attr("fill", "#000000")
                    .text(function(d) {
                        return "In " + d.year + ", " + d.drug_prison + " people in Spokane County received prison sentences for drug crimes.";
                    });
                    
                svg.append("g")
                    .attr("class", "x axis")
                    .attr("transform", "translate(" + padding[3] + "," + (h - padding[2]) + ")")
                    //this positions axis visually, would be at 0,0 otherwise
                    .call(Xaxis);
                
                svg.append("g")
                    .attr("class", "y axis")
                    .attr("transform", "translate(" + (padding[3] - 10) + ",0)")
                    //.attr("transform", "translate(" + padding[3] + ",0)")
                    //this positions axis visually, would be at 0,0 otherwise. translation is relative to the graph itself, I think, not the svg, because a 0 value still gets you some top padding
                    .call(Yaxis);
                    
                });
            
    
​
        
​
        </script>
    <p id="footer">Data from the <a href="https://wa-state-ofm.us/CrimeStatsOnline/">Washington Statistical Analysis Center</a></p>
    </body>
​
    
</html>
    