{"id":1243,"date":"2025-04-04T02:02:16","date_gmt":"2025-04-04T02:02:16","guid":{"rendered":"https:\/\/satokotadesign.com\/blog\/?p=1243"},"modified":"2025-05-16T02:14:58","modified_gmt":"2025-05-16T02:14:58","slug":"css_firework","status":"publish","type":"post","link":"https:\/\/satokotadesign.com\/blog\/css_firework\/","title":{"rendered":"\u590f\u306eWeb\u30c7\u30b6\u30a4\u30f3\u306b\u3074\u3063\u305f\u308a\uff01CSS\uff0bJavaScript\u3067\u4f5c\u308b\u82b1\u706b\u30a8\u30d5\u30a7\u30af\u30c8\u306e\u5b9f\u88c5\u65b9\u6cd5"},"content":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\uff01\u9759\u5ca1\u770c\u6d5c\u677e\u5e02\u3067WEB\u30c7\u30b6\u30a4\u30ca\u30fc\u3092\u3057\u3066\u3044\u307e\u3059\u5c0f\u7027\u3067\u3059\u3002<\/p>\n<p>\u590f\u3068\u3044\u3048\u3070\u3001\u82b1\u706b\u5927\u4f1a\u3001\u7e01\u65e5\u3001\u590f\u796d\u308a\u2026\u3002<br \/>\nWeb\u30b5\u30a4\u30c8\u3067\u3082\u3001\u305d\u3093\u306a<span class=\"sc_marker-animation\">\u5b63\u7bc0\u611f\u3092\u6f14\u51fa\u3067\u304d\u305f\u3089\u8a2a\u308c\u305f\u4eba\u306e\u5370\u8c61\u3082\u30b0\u30c3\u3068\u826f\u304f\u306a\u308a\u307e\u3059\u3088\u306d\u3002<\/span><br \/>\n\u4eca\u56de\u306f\u3001CSS\u3068JavaScript\u3092\u4f7f\u3063\u3066\u591c\u7a7a\u306b\u82b1\u706b\u304c\u6253\u3061\u4e0a\u304c\u308b\u3088\u3046\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p>\u30b3\u30d4\u30da\u3067\u4f7f\u3048\u308b\u30b3\u30fc\u30c9\u3082\u7528\u610f\u3057\u3066\u3044\u308b\u306e\u3067\u3001<span class=\"sc_marker-animation\">\u82b1\u706b\u5927\u4f1a\u306e\u544a\u77e5\u30b5\u30a4\u30c8\u3084\u30a4\u30d9\u30f3\u30c8LP<\/span>\u306b\u305c\u3072\u6d3b\u7528\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u5b8c\u6210\u30a4\u30e1\u30fc\u30b8<\/span><\/h2>\n<p>\u4e0b\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u4f7f\u3048\u3070\u3001<span class=\"sc_marker-animation\">\u591c\u7a7a\u306b\u30ab\u30e9\u30d5\u30eb\u306a\u706b\u82b1\u304c\u30b7\u30e5\u30c3\u3068\u6253\u3061\u4e0a\u304c\u3063\u3066\u30d1\u30c3\u3068\u5f3e\u3051\u308b\u3088\u3046\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/span>\u304c\u518d\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n<p class=\"codepen\" data-height=\"300\" data-default-tab=\"html,result\" data-slug-hash=\"vEYPBNK\" data-pen-title=\"Untitled\" data-user=\"ekwwawpb-the-styleful\" style=\"height: 300px; box-sizing: border-box; display: flex; align-items: center; justify-content: center; border: 2px solid; margin: 1em 0; padding: 1em;\">\n  <span>See the Pen <a href=\"https:\/\/codepen.io\/ekwwawpb-the-styleful\/pen\/vEYPBNK\"><br \/>\n  Untitled<\/a> by \u5c0f\u7027\u8ce2 (<a href=\"https:\/\/codepen.io\/ekwwawpb-the-styleful\">@ekwwawpb-the-styleful<\/a>)<br \/>\n  on <a href=\"https:\/\/codepen.io\">CodePen<\/a>.<\/span>\n<\/p>\n<p><script async src=\"https:\/\/public.codepenassets.com\/embed\/index.js\"><\/script><\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u5b9f\u88c5\u30b3\u30fc\u30c9<\/span><\/h2>\n<h3 class=\"sc_heading bborder b blue\"><span class=\"sc_title\">HTML<\/span><\/h3>\n<pre class=\"line-numbers\"><code class=\"language-html\">&lt;canvas id=\"fireworks\"&gt;&lt;\/canvas&gt; <\/code><\/pre>\n<h3 class=\"sc_heading bborder b blue\"><span class=\"sc_title\">CSS<\/span><\/h3>\n<pre class=\"line-numbers\"><code class=\"language-css\">body {\r\n  margin: 0;\r\n  background: #000;\r\n  overflow: hidden;\r\n}\r\ncanvas {\r\n  position: fixed;\r\n  top: 0;\r\n  left: 0;\r\n  z-index: 9999;\r\n}<\/code><\/pre>\n<h3 class=\"sc_heading bborder b blue\"><span class=\"sc_title\">JavaScript<\/span><\/h3>\n<pre class=\"line-numbers\"><code class=\"language-javascript\">const canvas = document.getElementById(\"fireworks\");\r\nconst ctx = canvas.getContext(\"2d\");\r\ncanvas.width = window.innerWidth;\r\ncanvas.height = window.innerHeight;\r\nfunction random(min, max) {\r\n  return Math.random() * (max - min) + min;\r\n}\r\nlet particles = [];\r\nfunction createFirework() {\r\n  const count = 100;\r\n  const x = random(100, canvas.width - 100);\r\n  const y = random(100, canvas.height \/ 2);\r\n  const color = `hsl(${Math.floor(random(0, 360))}, 100%, 60%)`;\r\n  for (let i = 0; i < count; i++) {\r\n    particles.push({ x: x, y: y, vx: random(-5, 5), vy: random(-5, 5), alpha: 1, color: color });\r\n  }\r\n}\r\nfunction updateParticles() {\r\n  ctx.fillStyle = \"rgba(0, 0, 0, 0.1)\";\r\n  ctx.fillRect(0, 0, canvas.width, canvas.height);\r\n  particles.forEach((p, i) => {\r\n    p.x += p.vx;\r\n    p.y += p.vy;\r\n    p.alpha -= 0.01;\r\n    ctx.beginPath();\r\n    ctx.arc(p.x, p.y, 2, 0, Math.PI * 2);\r\n    ctx.fillStyle = p.color;\r\n    ctx.globalAlpha = p.alpha;\r\n    ctx.fill();\r\n    if (p.alpha <= 0) {\r\n      particles.splice(i, 1);\r\n    }\r\n  });\r\n  ctx.globalAlpha = 1;\r\n}\r\nfunction animate() {\r\n  requestAnimationFrame(animate);\r\n  updateParticles();\r\n  if (Math.random() < 0.05) {\r\n    createFirework();\r\n  }\r\n}\r\nanimate();<\/code><\/pre>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306e\u6d3b\u7528\u30b7\u30fc\u30f3<\/span><\/h2>\n<div class=\"sc_designlist ul fa_check blue\">\n<ul>\n<li>\u590f\u796d\u308a\u3084\u82b1\u706b\u5927\u4f1a\u306e\u544a\u77e5\u30da\u30fc\u30b8<\/li>\n<li>LP\u3084Web\u30d0\u30ca\u30fc\u3067\u306e\u30ef\u30f3\u30dd\u30a4\u30f3\u30c8\u6f14\u51fa<\/li>\n<li>\u30b9\u30af\u30ed\u30fc\u30eb\u6642\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u52b9\u679c\u3068\u3057\u3066<\/li>\n<\/ul>\n<\/div>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u6ce8\u610f\u70b9<\/span><\/h2>\n<p>\u82b1\u706b\u30a8\u30d5\u30a7\u30af\u30c8\u306f<span class=\"sc_marker-animation\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/span>\u305f\u3081\u3001\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u30b9\u30de\u30db\u3067\u306f\u975e\u8868\u793a\u306b\u3059\u308b\u306a\u3069\u8abf\u6574\u3059\u308b\u3068\u826f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<br \/>\nJavaScript\u306f\u7c21\u6613\u7684\u306a\u5b9f\u88c5\u306a\u306e\u3067\u3001\u30d1\u30fc\u30c6\u30a3\u30af\u30eb\u306e\u7ba1\u7406\u3084Canvas\u306e\u30b5\u30a4\u30ba\u8abf\u6574\u306a\u3069\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u6700\u9069\u5316\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u307e\u3068\u3081<\/span><\/h2>\n<p>CSS\u3068JavaScript\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001<span class=\"sc_marker-animation\">\u590f\u3089\u3057\u3044\u6f14\u51fa\u306e\u4e00\u3064\u3067\u3042\u308b\u300c\u82b1\u706b\u30a8\u30d5\u30a7\u30af\u30c8\u300d\u3082\u7c21\u5358\u306bWeb\u4e0a\u3067\u8868\u73fe\u3067\u304d\u307e\u3059\u3002<\/span><br \/>\n\u5370\u8c61\u7684\u306a\u30b5\u30a4\u30c8\u3065\u304f\u308a\u306e\u30a2\u30af\u30bb\u30f3\u30c8\u3068\u3057\u3066\u3001\u305c\u3072\u6d3b\u7528\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<p>Web\u5236\u4f5c\u3084\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306e\u3054\u76f8\u8ac7\u306f\u300csatokotadesign\u300d\u306b\u304a\u6c17\u8efd\u306b\u3069\u3046\u305e\uff01<\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"sc_heading solid red\"><span class=\"sc_title\">satokotadesign\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u5b9f\u65bd\u4e2d\uff01<\/span><\/h2>\n<div class=\"campaign_bnr\" style=\"margin:0 5%;\"><a href=\"https:\/\/hamameshi.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/satokotadesign.com\/img\/bnr-hamameshi.webp\" alt=\"\u6d5c\u677e\u5e02\u306e\u98f2\u98df\u5e97\u9650\u5b9a\uff5c\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u7121\u6599\u4f5c\u6210\u30b5\u30fc\u30d3\u30b9\" style=\"border: 3px solid #00a08c;border-radius: 20px;\"><\/a><\/div>\n<div class=\"campaign_bnr\" style=\"margin:0 5%;\"><a href=\"https:\/\/satokotadesign.com\/contact\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" data-src=\"https:\/\/satokotadesign.com\/img\/bnr-onayami.png\" alt=\"\u3076\u3063\u3061\u3083\u3051\u7121\u6599\u76f8\u8ac7\u4f1a\uff01\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u5236\u4f5c\u306e\u60a9\u307f\u8a71\u3057\u3066\u307f\u307e\u305b\u3093\u304b\uff1f\" style=\"border: 3px solid #f02025;border-radius: 20px;\" class=\"lazyload\" \/><\/a><\/div>\n<div class=\"campaign_bnr\"  style=\"margin:0 5%;\"><a href=\"https:\/\/satokotadesign.com\/contact\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" data-src=\"https:\/\/satokotadesign.com\/img\/bnr-kansyasai.png\" alt=\"satokotadesign4\u5468\u5e74\u8a18\u5ff5\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\" style=\"border: 3px solid #4183fe;border-radius: 20px;\" class=\"lazyload\" \/><\/a><\/div>\n<p><figure id=\"attachment_475\" aria-describedby=\"caption-attachment-475\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/satokotadesign.com\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-src=\"https:\/\/satokotadesign.com\/blog\/wp-content\/uploads\/2022\/10\/bnr.jpg\" alt=\"\u9759\u5ca1\u770c\u6d5c\u677e\u5e02\u3067\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u5236\u4f5c\u306a\u3089satokotadesign\" width=\"1500\" height=\"500\" class=\"size-full wp-image-475 lazyload\" data-srcset=\"https:\/\/satokotadesign.com\/blog\/wp-content\/uploads\/2022\/10\/bnr.jpg 1500w, https:\/\/satokotadesign.com\/blog\/wp-content\/uploads\/2022\/10\/bnr-500x167.jpg 500w, 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