Mapa mundial interactivo con React y D3.js

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Mapa mundial interactivo con React y D3.js

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HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Global Network - Countries World Map</title>
    <script src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
    <script src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
    <script src="https://d3js.org/d3.v7.min.js"></script>
    <script src="https://unpkg.com/topojson-client@3"></script>
    <script src="https://cdn.tailwindcss.com"></script>
    <link
      href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap"
      rel="stylesheet" />
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

body {
        font-family: "Inter", sans-serif;
        background: linear-gradient(to bottom right, #020617, #0f172a, #020617);
        color: #f8fafc;
        min-height: 100vh;
      }

.container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 1.5rem;
      }

.card {
        background: rgba(30, 41, 59, 0.4);
        backdrop-filter: blur(12px);
        border: 1px solid rgba(148, 163, 184, 0.1);
        border-radius: 1rem;
        padding: 1.5rem;
      }

.country-card {
        background: rgba(30, 41, 59, 0.6);
        border: 1px solid rgba(148, 163, 184, 0.2);
        border-radius: 0.75rem;
        padding: 0.75rem;
        transition: all 0.2s;
        cursor: pointer;
      }

.country-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
      }

.region-button {
        width: 100%;
        text-align: left;
        padding: 0.75rem 1rem;
        border-radius: 0.5rem;
        transition: all 0.2s;
        border: 1px solid transparent;
        background: transparent;
        color: #cbd5e1;
        cursor: pointer;
      }

.region-button:hover {
        background: rgba(59, 130, 246, 0.1);
        border-color: rgba(59, 130, 246, 0.3);
      }

.region-button.active {
        background: #3b82f6;
        color: white;
        font-weight: 600;
      }

.stat-bar {
        height: 8px;
        border-radius: 4px;
        transition: width 0.5s ease;
      }

.tooltip {
        position: fixed;
        background: rgba(30, 41, 59, 0.95);
        backdrop-filter: blur(12px);
        border: 2px solid #3b82f6;
        border-radius: 0.75rem;
        padding: 1rem;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
        pointer-events: none;
        z-index: 1000;
      }

svg {
        width: 100%;
        height: 100%;
      }

svg .country {
        transition: all 0.2s ease;
      }

@media (max-width: 1024px) {
        .grid-responsive {
          grid-template-columns: 1fr !important;
        }
      }

@media (max-width: 767px) and (min-width: 640px) {
        .grid-responsive {
          grid-template-columns: 1fr !important;
          grid-template-rows: 600px auto auto !important;
          gap: 1.5rem !important;
        }

.map-section {
          grid-column: 1 !important;
          grid-row: 1 !important;
        }

.middle-row {
          grid-column: 1 !important;
          grid-row: 2 !important;
          display: grid !important;
          grid-template-columns: 1fr 1fr !important;
          gap: 1.5rem !important;
        }

.countries-section {
          grid-column: 1 !important;
          grid-row: 3 !important;
        }

.sidebar-section {
          display: none !important;
        }
      }

@media (max-width: 639px) {
        .grid-responsive {
          grid-template-columns: 1fr !important;
          grid-template-rows: 500px auto auto auto !important;
          gap: 1.5rem !important;
        }

.map-section {
          grid-column: 1 !important;
          grid-row: 1 !important;
        }

.regions-mobile {
          grid-column: 1 !important;
          grid-row: 2 !important;
          display: block !important;
        }

.statistics-mobile {
          grid-column: 1 !important;
          grid-row: 3 !important;
          display: block !important;
        }

.countries-section {
          grid-column: 1 !important;
          grid-row: 4 !important;
        }

.sidebar-section,
        .middle-row {
          display: none !important;
        }
      }

.middle-row,
      .regions-mobile,
      .statistics-mobile {
        display: none;
      }
    </style>
  </head>
  <body>
    <div id="root"></div>
    <script type="text/babel">
      const {useState, useEffect, useRef} = React;

const regions = [
        {
          name: "Southeast Asia",
          color: "#10b981",
          countries: [
            {name: "Singapore", code: "SGP", coordinates: [1.3521, 103.8198]},
            {name: "Thailand", code: "THA", coordinates: [15.87, 100.9925]},
            {name: "Indonesia", code: "IDN", coordinates: [-0.7893, 113.9213]},
            {name: "Vietnam", code: "VNM", coordinates: [14.0583, 108.2772]},
            {name: "Philippines", code: "PHL", coordinates: [12.8797, 121.774]},
            {name: "Brunei", code: "BRN", coordinates: [4.5353, 114.7277]},
            {name: "Cambodia", code: "KHM", coordinates: [12.5657, 104.991]},
          ],
        },
        {
          name: "South Asia",
          color: "#3b82f6",
          countries: [
            {name: "India", code: "IND", coordinates: [20.5937, 78.9629]},
            {name: "Bangladesh", code: "BGD", coordinates: [23.685, 90.3563]},
            {name: "Sri Lanka", code: "LKA", coordinates: [7.8731, 80.7718]},
            {name: "Pakistan", code: "PAK", coordinates: [30.3753, 69.3451]},
            {name: "Nepal", code: "NPL", coordinates: [28.3949, 84.124]},
          ],
        },
        {
          name: "East Asia",
          color: "#8b5cf6",
          countries: [
            {name: "China", code: "CHN", coordinates: [35.8617, 104.1954]},
            {name: "Japan", code: "JPN", coordinates: [36.2048, 138.2529]},
            {
              name: "South Korea",
              code: "KOR",
              coordinates: [35.9078, 127.7669],
            },
            {name: "Taiwan", code: "TWN", coordinates: [23.6978, 120.9605]},
          ],
        },
        {
          name: "Middle East",
          color: "#f59e0b",
          countries: [
            {
              name: "Saudi Arabia",
              code: "SAU",
              coordinates: [23.8859, 45.0792],
            },
            {name: "Qatar", code: "QAT", coordinates: [25.3548, 51.1839]},
            {
              name: "Emirates",
              code: "ARE",
              coordinates: [23.4241, 53.8478],
            },
            {name: "Oman", code: "OMN", coordinates: [21.4735, 55.9754]},
            {name: "Syria", code: "SYR", coordinates: [34.8021, 38.9968]},
            {name: "Jordan", code: "JOR", coordinates: [30.5852, 36.2384]},
          ],
        },
        {
          name: "Europe",
          color: "#ec4899",
          countries: [
            {
              name: "United Kingdom",
              code: "GBR",
              coordinates: [55.3781, -3.436],
            },
            {name: "France", code: "FRA", coordinates: [46.2276, 2.2137]},
            {name: "Germany", code: "DEU", coordinates: [51.1657, 10.4515]},
            {name: "Italy", code: "ITA", coordinates: [41.8719, 12.5674]},
            {name: "Spain", code: "ESP", coordinates: [40.4637, -3.7492]},
            {name: "Türkiye", code: "TUR", coordinates: [38.9637, 35.2433]},
          ],
        },
        {
          name: "Africa",
          color: "#ef4444",
          countries: [
            {name: "Egypt", code: "EGY", coordinates: [26.8206, 30.8025]},
            {name: "Morocco", code: "MAR", coordinates: [31.7917, -7.0926]},
            {
              name: "South Africa",
              code: "ZAF",
              coordinates: [-30.5595, 22.9375],
            },
            {name: "Kenya", code: "KEN", coordinates: [-0.0236, 37.9062]},
          ],
        },
        {
          name: "Oceania",
          color: "#06b6d4",
          countries: [
            {name: "Australia", code: "AUS", coordinates: [-25.2744, 133.7751]},
            {
              name: "New Zealand",
              code: "NZL",
              coordinates: [-40.9006, 174.886],
            },
          ],
        },
      ];

const WIDTH = 1200;
      const HEIGHT = 600;

const projection = d3
        .geoMercator()
        .scale(WIDTH / (2 * Math.PI))
        .translate([WIDTH / 2, HEIGHT / 2]);

const pathGenerator = d3.geoPath().projection(projection);

function findRegionForCountryCode(code) {
        for (const r of regions) {
          if (r.countries.some((c) => c.code === code)) return r;
        }
        return null;
      }

function findRegionForCountryName(name) {
        for (const r of regions) {
          if (r.countries.some((c) => c.name === name || c.code === name))
            return r;
        }
        return null;
      }

const latLngToXYOld = (lat, lng) => {
        const x = ((lng + 180) / 360) * WIDTH;
        const y = ((90 - lat) / 180) * HEIGHT;
        return {x, y};
      };

function InteractiveWorldMap({selectedRegion}) {
        const svgRef = useRef(null);
        const [geojson, setGeojson] = useState(null);
        const [selectedCountry, setSelectedCountry] = useState(null);
        const [mousePos, setMousePos] = useState({x: 0, y: 0});
        const [hoveredCode, setHoveredCode] = useState(null);
        const mapContainerRef = useRef(null);

useEffect(() => {
          const url =
            "https://raw.githubusercontent.com/holtzy/D3-graph-gallery/master/DATA/world.geojson";
          d3.json(url)
            .then((data) => {
              setGeojson(data);
            })
            .catch((err) => {
              console.error("Failed to load GeoJSON:", err);
            });
        }, []);

useEffect(() => {
          if (!geojson) return;
          const svg = d3.select(svgRef.current);
          svg.selectAll("*").remove();

const defs = svg.append("defs");
          defs
            .append("pattern")
            .attr("id", "grid")
            .attr("width", 40)
            .attr("height", 40)
            .attr("patternUnits", "userSpaceOnUse")
            .append("path")
            .attr("d", "M 40 0 L 0 0 0 40")
            .attr("fill", "none")
            .attr("stroke", "#334155")
            .attr("stroke-width", 0.5)
            .attr("opacity", 0.3);

svg
            .append("rect")
            .attr("width", WIDTH)
            .attr("height", HEIGHT)
            .attr("fill", "url(#grid)");

const worldGroup = svg.append("g").attr("class", "world-base");
          worldGroup
            .selectAll("path")
            .data(geojson.features)
            .join("path")
            .attr("d", pathGenerator)
            .attr("fill", "rgba(148,163,184,0.04)")
            .attr("stroke", "rgba(148,163,184,0.06)")
            .attr("stroke-width", 0.3);

const featureByName = new Map();
          geojson.features.forEach((f) => {
            const n =
              f.properties && f.properties.name
                ? f.properties.name.toLowerCase()
                : null;
            if (n) featureByName.set(n, f);
          });

const countryGroup = svg
            .append("g")
            .attr("class", "translated-countries");
          const unmatched = [];

regions.forEach((region) => {
            region.countries.forEach((c) => {
              if (selectedRegion && region.name !== selectedRegion) {
                return;
              }

const targetNameLower = c.name.toLowerCase();

let feature =
                featureByName.get(targetNameLower) ||
                featureByName.get(
                  targetNameLower.replace("turkiye", "turkey")
                ) ||
                featureByName.get(
                  targetNameLower.replace(
                    "united kingdom",
                    "united kingdom of great britain and northern ireland"
                  )
                ) ||
                null;

if (!feature) {
                for (const [k, f] of featureByName.entries()) {
                  if (
                    k.includes(targetNameLower) ||
                    targetNameLower.includes(k)
                  ) {
                    feature = f;
                    break;
                  }
                }
              }

if (!feature) {
                unmatched.push(c.name);
                return;
              }

const g = countryGroup
                .append("g")
                .attr("class", "country-wrapper");
              const path = g
                .append("path")
                .datum(feature)
                .attr("d", pathGenerator)
                .attr("fill", region.color)
                .attr("opacity", selectedRegion ? 0.3 : 0.15)
                .attr("stroke", region.color)
                .attr("stroke-width", selectedRegion ? 0.8 : 0.4)
                .style("cursor", "pointer");

let centroid;
              try {
                centroid = pathGenerator.centroid(feature);
                if (!Array.isArray(centroid) || isNaN(centroid[0])) {
                  const bounds = pathGenerator.bounds(feature);
                  centroid = [
                    (bounds[0][0] + bounds[1][0]) / 2,
                    (bounds[0][1] + bounds[1][1]) / 2,
                  ];
                }
              } catch (e) {
                const bounds = pathGenerator.bounds(feature);
                centroid = [
                  (bounds[0][0] + bounds[1][0]) / 2,
                  (bounds[0][1] + bounds[1][1]) / 2,
                ];
              }

const desired = projection([c.coordinates[1], c.coordinates[0]]);
              const dx = desired[0] - centroid[0];
              const dy = desired[1] - centroid[1];

g.attr("transform", `translate(${dx},${dy})`);

g.on("mouseenter", (event) => {
                setHoveredCode(c.code);
                setSelectedCountry(c);

const mapRect = mapContainerRef.current.getBoundingClientRect();
                const relativeX = event.clientX - mapRect.left;
                const relativeY = event.clientY - mapRect.top;

setMousePos({x: relativeX, y: relativeY});
                path
                  .transition()
                  .duration(120)
                  .attr("opacity", selectedRegion ? 0.6 : 0.45);
              });

g.on("mousemove", (event) => {
                const mapRect = mapContainerRef.current.getBoundingClientRect();
                const relativeX = event.clientX - mapRect.left;
                const relativeY = event.clientY - mapRect.top;

setMousePos({x: relativeX, y: relativeY});
              });

g.on("mouseleave", () => {
                setHoveredCode(null);
                setSelectedCountry(null);
                path
                  .transition()
                  .duration(120)
                  .attr("opacity", selectedRegion ? 0.3 : 0.15);
              });

g.append("circle")
                .attr("cx", desired[0] - dx)
                .attr("cy", desired[1] - dy)
                .attr("r", selectedRegion ? 10 : 8)
                .attr("fill", region.color)
                .attr("opacity", selectedRegion ? 0.8 : 0.6)
                .style("pointer-events", "none");

g.append("circle")
                .attr("cx", desired[0] - dx)
                .attr("cy", desired[1] - dy)
                .attr("r", selectedRegion ? 5 : 4)
                .attr("fill", region.color)
                .style("pointer-events", "none");
            });
          });

if (unmatched.length) {
            console.warn(
              "Some country names could not be matched to GeoJSON features:",
              unmatched
            );
          }

svg
            .append("line")
            .attr("x1", 0)
            .attr("y1", HEIGHT / 2)
            .attr("x2", WIDTH)
            .attr("y2", HEIGHT / 2)
            .attr("stroke", "#475569")
            .attr("stroke-width", 1)
            .attr("opacity", 0.5)
            .attr("stroke-dasharray", "5,5");

svg
            .append("line")
            .attr("x1", WIDTH / 2)
            .attr("y1", 0)
            .attr("x2", WIDTH / 2)
            .attr("y2", HEIGHT)
            .attr("stroke", "#475569")
            .attr("stroke-width", 1)
            .attr("opacity", 0.5)
            .attr("stroke-dasharray", "5,5");
        }, [geojson, selectedRegion]);

return (
          <div
            ref={mapContainerRef}
            style={{
              position: "relative",
              width: "100%",
              height: "100%",
              background: "rgba(15, 23, 42, 0.5)",
              borderRadius: "0.75rem",
              overflow: "hidden",
            }}>
            <svg
              ref={svgRef}
              viewBox={`0 0 ${WIDTH} ${HEIGHT}`}
              style={{width: "100%", height: "100%", maxHeight: "600px"}}
            />

{selectedCountry && (
              <div
                className="tooltip tooltip-left"
                style={{
                  left: `${mousePos.x}px`,
                  top: `${mousePos.y}px`,
                }}>
                <div
                  style={{
                    fontWeight: "bold",
                    fontSize: "1.125rem",
                    marginBottom: "0.25rem",
                  }}>
                  {selectedCountry.name}
                </div>
                <div style={{fontSize: "0.875rem", color: "#94a3b8"}}>
                  {selectedCountry.coordinates[0].toFixed(2)}°,{" "}
                  {selectedCountry.coordinates[1].toFixed(2)}°
                </div>
                <div
                  style={{
                    fontSize: "0.75rem",
                    color: "#3b82f6",
                    marginTop: "0.25rem",
                  }}>
                  {
                    regions.find((r) =>
                      r.countries.some((c) => c.code === selectedCountry.code)
                    )?.name
                  }
                </div>
              </div>
            )}
          </div>
        );
      }

function RegionButtons({selectedRegion, setSelectedRegion}) {
        return (
          <div
            style={{display: "flex", flexDirection: "column", gap: "0.5rem"}}>
            <button
              onClick={() => setSelectedRegion(null)}
              className={`region-button ${!selectedRegion ? "active" : ""}`}>
              <span>All Regions ({regions.length})</span>
            </button>
            {regions.map((region) => (
              <button
                key={region.name}
                onClick={() => setSelectedRegion(region.name)}
                className={`region-button ${
                  selectedRegion === region.name ? "active" : ""
                }`}
                style={{
                  display: "flex",
                  alignItems: "center",
                  justifyContent: "space-between",
                }}>
                <div
                  style={{
                    display: "flex",
                    alignItems: "center",
                    gap: "0.5rem",
                  }}>
                  <div
                    style={{
                      width: "12px",
                      height: "12px",
                      borderRadius: "50%",
                      background: region.color,
                    }}></div>
                  <span>{region.name}</span>
                </div>
                <span style={{fontSize: "0.875rem", opacity: 0.7}}>
                  {region.countries.length}
                </span>
              </button>
            ))}
          </div>
        );
      }

function Statistics({regions, totalCountries}) {
        return (
          <div style={{display: "flex", flexDirection: "column", gap: "1rem"}}>
            {regions.map((region) => (
              <div key={region.name}>
                <div
                  style={{
                    display: "flex",
                    justifyContent: "space-between",
                    marginBottom: "0.5rem",
                    fontSize: "0.875rem",
                  }}>
                  <div
                    style={{
                      display: "flex",
                      alignItems: "center",
                      gap: "0.5rem",
                    }}>
                    <div
                      style={{
                        width: "8px",
                        height: "8px",
                        borderRadius: "50%",
                        background: region.color,
                      }}></div>
                    <span>{region.name}</span>
                  </div>
                  <span style={{fontWeight: "bold"}}>
                    {region.countries.length}
                  </span>
                </div>
                <div
                  style={{
                    width: "100%",
                    height: "8px",
                    background: "rgba(51, 65, 85, 0.5)",
                    borderRadius: "4px",
                    overflow: "hidden",
                  }}>
                  <div
                    className="stat-bar"
                    style={{
                      width: `${
                        (region.countries.length / totalCountries) * 100
                      }%`,
                      background: region.color,
                    }}></div>
                </div>
              </div>
            ))}
          </div>
        );
      }

function App() {
        const totalCountries = regions.reduce(
          (acc, r) => acc + r.countries.length,
          0
        );
        const [selectedRegion, setSelectedRegion] = useState(null);

const filteredRegions = selectedRegion
          ? regions.filter((r) => r.name === selectedRegion)
          : regions;

return (
          <div style={{minHeight: "100vh"}}>
            <header
              style={{
                borderBottom: "1px solid rgba(148, 163, 184, 0.2)",
                backdropFilter: "blur(12px)",
                background: "rgba(2, 6, 23, 0.3)",
              }}>
              <div className="container" style={{padding: "1.5rem"}}>
                <div
                  style={{
                    display: "flex",
                    alignItems: "center",
                    justifyContent: "space-between",
                    flexWrap: "wrap",
                    gap: "1rem",
                  }}>
                  <div>
                    <h1
                      style={{
                        fontSize: "clamp(1.5rem, 4vw, 2rem)",
                        fontWeight: "bold",
                        marginBottom: "0.25rem",
                      }}>
                      Global Network
                    </h1>
                    <p style={{fontSize: "0.875rem", color: "#94a3b8"}}>
                      Interactive visualization of {totalCountries} countries
                    </p>
                  </div>
                  <div style={{textAlign: "right"}}>
                    <div
                      style={{
                        fontSize: "2.5rem",
                        fontWeight: "bold",
                        color: "#3b82f6",
                      }}>
                      {totalCountries}
                    </div>
                    <div
                      style={{
                        fontSize: "0.75rem",
                        color: "#94a3b8",
                        textTransform: "uppercase",
                        letterSpacing: "0.05em",
                      }}>
                      Countries
                    </div>
                  </div>
                </div>
              </div>
            </header>
            <main className="container" style={{padding: "1.5rem"}}>
              <div
                className="grid-responsive"
                style={{
                  display: "grid",
                  gridTemplateColumns: "2fr 1fr",
                  gridTemplateRows: "600px auto",
                  gap: "1.5rem",
                }}>
                <div
                  className="map-section"
                  style={{gridColumn: "1", gridRow: "1"}}>
                  <div className="card" style={{height: "100%"}}>
                    <div
                      style={{
                        display: "flex",
                        alignItems: "center",
                        justifyContent: "space-between",
                        marginBottom: "1rem",
                        flexWrap: "wrap",
                        gap: "0.5rem",
                      }}>
                      <h2 style={{fontSize: "1.25rem", fontWeight: "bold"}}>
                        World Map
                      </h2>
                      <div style={{fontSize: "0.875rem", color: "#94a3b8"}}>
                        Hover over countries to see details
                      </div>
                    </div>
                    <div style={{height: "calc(100% - 60px)"}}>
                      <InteractiveWorldMap selectedRegion={selectedRegion} />
                    </div>
                  </div>
                </div>

<div
                  className="countries-section"
                  style={{gridColumn: "1", gridRow: "2"}}>
                  <div className="card">
                    <h2
                      style={{
                        fontSize: "1.25rem",
                        fontWeight: "bold",
                        marginBottom: "1.5rem",
                      }}>
                      {selectedRegion
                        ? `${selectedRegion} Countries`
                        : "All Countries"}
                    </h2>
                    <div
                      style={{
                        display: "grid",
                        gridTemplateColumns:
                          "repeat(auto-fill, minmax(150px, 1fr))",
                        gap: "0.75rem",
                      }}>
                      {filteredRegions.flatMap((region) =>
                        region.countries.map((country) => (
                          <div key={country.code} className="country-card">
                            <div
                              style={{
                                display: "flex",
                                alignItems: "center",
                                gap: "0.5rem",
                                marginBottom: "0.5rem",
                              }}>
                              <div
                                style={{
                                  width: "8px",
                                  height: "8px",
                                  borderRadius: "50%",
                                  background: region.color,
                                }}></div>
                              <div
                                style={{
                                  fontWeight: "600",
                                  fontSize: "0.875rem",
                                }}>
                                {country.name}
                              </div>
                            </div>
                            <div
                              style={{fontSize: "0.75rem", color: "#94a3b8"}}>
                              {country.coordinates[0].toFixed(1)}°,{" "}
                              {country.coordinates[1].toFixed(1)}°
                            </div>
                          </div>
                        ))
                      )}
                    </div>
                  </div>
                </div>

<div
                  className="sidebar-section"
                  style={{gridColumn: "2", gridRow: "1 / span 2"}}>
                  <div
                    style={{
                      display: "flex",
                      flexDirection: "column",
                      gap: "1.5rem",
                    }}>
                    <div className="card">
                      <h3
                        style={{
                          fontSize: "1.125rem",
                          fontWeight: "bold",
                          marginBottom: "1rem",
                        }}>
                        Regions
                      </h3>
                      <RegionButtons
                        selectedRegion={selectedRegion}
                        setSelectedRegion={setSelectedRegion}
                      />
                    </div>

<div className="card">
                      <h3
                        style={{
                          fontSize: "1.125rem",
                          fontWeight: "bold",
                          marginBottom: "1rem",
                        }}>
                        Statistics
                      </h3>
                      <Statistics
                        regions={regions}
                        totalCountries={totalCountries}
                      />
                    </div>
                  </div>
                </div>

<div className="middle-row">
                  <div className="card">
                    <h3
                      style={{
                        fontSize: "1.125rem",
                        fontWeight: "bold",
                        marginBottom: "1rem",
                      }}>
                      Regions
                    </h3>
                    <RegionButtons
                      selectedRegion={selectedRegion}
                      setSelectedRegion={setSelectedRegion}
                    />
                  </div>

<div className="card">
                    <h3
                      style={{
                        fontSize: "1.125rem",
                        fontWeight: "bold",
                        marginBottom: "1rem",
                      }}>
                      Statistics
                    </h3>
                    <Statistics
                      regions={regions}
                      totalCountries={totalCountries}
                    />
                  </div>
                </div>

<div className="regions-mobile">
                  <div className="card">
                    <h3
                      style={{
                        fontSize: "1.125rem",
                        fontWeight: "bold",
                        marginBottom: "1rem",
                      }}>
                      Regions
                    </h3>
                    <RegionButtons
                      selectedRegion={selectedRegion}
                      setSelectedRegion={setSelectedRegion}
                    />
                  </div>
                </div>

<div className="statistics-mobile">
                  <div className="card">
                    <h3
                      style={{
                        fontSize: "1.125rem",
                        fontWeight: "bold",
                        marginBottom: "1rem",
                      }}>
                      Statistics
                    </h3>
                    <Statistics
                      regions={regions}
                      totalCountries={totalCountries}
                    />
                  </div>
                </div>
              </div>
            </main>
          </div>
        );
      }

ReactDOM.render(<App />, document.getElementById("root"));
    </script>
  </body>
</html>

CSS