.fireworks {
      position: absolute;
      width: 150px;
      height: 150px;
  /*     padding-bottom: 100px; */
      background: url('../images/star.png') right top no-repeat;
      background-size: auto 150px;
      animation: fireworks 2s steps(24) infinite, random 8s steps(1) infinite;
  }
  @keyframes fireworks {
      0% {
          background-position: 0%;
      }
      50%,
      100% {
          background-position: 100% 100%;
      }
  }
  
  @keyframes random {
      0% {
          transform: translate(0, 0);
      }
      25% {
          transform: translate(200%, 50%) scale(0.8);
      }
      50% {
          transform: translate(80%, 80%) scale(1.2);
      }
      75% {
          transform: translate(20%, 60%) scale(0.65);
      }
  }
  @media screen and (prefers-reduced-motion) { 
      /* 禁用不必要的动画 */ 
      .fireworks { 
          animation: none; 
      } 
  }




  
  @keyframes firework {
    0% { transform: translate(var(--x), var(--initialY)); width: var(--initialSize); opacity: 1; }
    50% { width: 0.5vmin; opacity: 1; }
    100% { width: var(--finalSize); opacity: 0; }
  }
  
  /* @keyframes fireworkPseudo {
    0% { transform: translate(-50%, -50%); width: var(--initialSize); opacity: 1; }
    50% { width: 0.5vmin; opacity: 1; }
    100% { width: var(--finalSize); opacity: 0; }
  }
   */

   .firework.f2,
   .firework.f2::before,
   .firework.f2::after
   {
    top: 30%;
    left: 10%;
    animation: firework 2.5s infinite;
   }

  .firework,
  .firework::before,
  .firework::after
  {
    --initialSize: 0.5vmin;
    --finalSize: 45vmin;
    --particleSize: 0.2vmin;
    --color1: yellow;
    --color2: khaki;
    --color3: white;
    --color4: lime;
    --color5: gold;
    --color6: mediumseagreen;
    --y: -30vmin;
    --x: -50%;
    --initialY: 60vmin;
    content: "";
    animation: firework 2s infinite;
    position: absolute;
    top: 40%;
    left: 80%;
    transform: translate(-50%, var(--y));
    width: var(--initialSize);
    aspect-ratio: 1;
    background: 
      /*
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 0% 0%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 100% 0%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 100% 100%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 0% 100%,
      */
      
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 50% 0%,
      radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 100% 50%,
      radial-gradient(circle, var(--color3) var(--particleSize), #0000 0) 50% 100%,
      radial-gradient(circle, var(--color4) var(--particleSize), #0000 0) 0% 50%,
      
      /* bottom right */
      radial-gradient(circle, var(--color5) var(--particleSize), #0000 0) 80% 90%,
      radial-gradient(circle, var(--color6) var(--particleSize), #0000 0) 95% 90%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 90% 70%,
      radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 100% 60%,
      radial-gradient(circle, var(--color3) var(--particleSize), #0000 0) 55% 80%,
      radial-gradient(circle, var(--color4) var(--particleSize), #0000 0) 70% 77%,
      
      /* bottom left */
      radial-gradient(circle, var(--color5) var(--particleSize), #0000 0) 22% 90%,
      radial-gradient(circle, var(--color6) var(--particleSize), #0000 0) 45% 90%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 33% 70%,
      radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 10% 60%,
      radial-gradient(circle, var(--color3) var(--particleSize), #0000 0) 31% 80%,
      radial-gradient(circle, var(--color4) var(--particleSize), #0000 0) 28% 77%,
      radial-gradient(circle, var(--color5) var(--particleSize), #0000 0) 13% 72%,
      
      /* top left */
      radial-gradient(circle, var(--color6) var(--particleSize), #0000 0) 80% 10%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 95% 14%,
      radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 90% 23%,
      radial-gradient(circle, var(--color3) var(--particleSize), #0000 0) 100% 43%,
      radial-gradient(circle, var(--color4) var(--particleSize), #0000 0) 85% 27%,
      radial-gradient(circle, var(--color5) var(--particleSize), #0000 0) 77% 37%,
      radial-gradient(circle, var(--color6) var(--particleSize), #0000 0) 60% 7%,
      
      /* top right */
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 22% 14%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 45% 20%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 33% 34%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 10% 29%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 31% 37%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 28% 7%,
      radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 13% 42%
      ;
    background-size: var(--initialSize) var(--initialSize);
    background-repeat: no-repeat;
  }
  
  .firework::before {
    --x: -50%;
    --y: -50%;
    --initialY: -50%;
  /*   transform: translate(-20vmin, -2vmin) rotate(40deg) scale(1.3) rotateY(40deg); */
    transform: translate(-50%, -50%) rotate(40deg) scale(1.3) rotateY(40deg);
  /*   animation: fireworkPseudo 2s infinite; */
  }
  
  .firework::after {
    --x: -50%;
    --y: -50%;
    --initialY: -50%;
  /*   transform: translate(44vmin, -50%) rotate(170deg) scale(1.15) rotateY(-30deg); */
    transform: translate(-50%, -50%) rotate(170deg) scale(1.15) rotateY(-30deg);
  /*   animation: fireworkPseudo 2s infinite; */
  }
  
  .firework:nth-child(2) {
    --x: 30vmin;
  }
  
  .firework:nth-child(2),
  .firework:nth-child(2)::before,
  .firework:nth-child(2)::after {
    --color1: pink;
    --color2: violet;
    --color3: fuchsia;
    --color4: orchid;
    --color5: plum;
    --color6: lavender;  
    --finalSize: 40vmin;
    left: 30%;
    top: 60%;
    animation-delay: -0.25s;
  }
  
  .firework:nth-child(3) {
    --x: -30vmin;
    --y: -50vmin;
  }
  
  .firework:nth-child(3),
  .firework:nth-child(3)::before,
  .firework:nth-child(3)::after {
    --color1: cyan;
    --color2: lightcyan;
    --color3: lightblue;
    --color4: PaleTurquoise;
    --color5: SkyBlue;
    --color6: lavender;
    --finalSize: 35vmin;
    left: 70%;
    top: 60%;
    animation-delay: -0.4s;
  }