css水晶球雪花动画

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html

css

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html

css

body {
  background-color: #d6d6d3;
  height: 100vh;
  width: 100vw;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  margin: 0;
}

#c1,
#c2 {
  position: absolute;
  top: 0;
  left: 0;
  height: 300px;
  width: 300px;
  border-radius: 50%;
}

#c1 {
  z-index: -11;
}
#c2 {
  z-index: 1000;
}

.container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  position: relative;
}

.snowglobe {
  height: 300px;
  width: 300px;
  border-radius: 50%;
  background-color: #dadee8;
  border: 2px solid #cad0de;
  z-index: -30;
}

.snowglobe:before {
  position: absolute;
  content: "";
  height: 280px;
  width: 280px;
  border-radius: 50%;
  top: 10px;
  left: 10px;
  background: #fff;
}

.snowglobe:after {
  position: absolute;
  content: "";
  height: 280px;
  width: 290px;
  border-radius: 50%;
  top: 17px;
  background: #dadee8;
}

.base {
  position: relative;
  border-bottom: 50px solid #534f54;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  height: 0;
  width: 242px;
  margin-top: -60px;
  z-index: -10;
  -ms-flex-item-align: center;
      -ms-grid-row-align: center;
      align-self: center;
}

.base:after {
  position: absolute;
  content: "";
  top: 25px;
  left: -10px;
  width: 262px;
  height: 50px;
  border-radius: 125px / 25px;
  background: #534f54;
}

.baseTop {
  background-color: #fff;
  width: 242px;
  height: 40px;
  border-radius: 125px / 20px;
  margin-top: -72px;
  box-sizing: border-box;
  border-bottom: 8px solid #dadee8;
  z-index: -10;
  -ms-flex-item-align: center;
      -ms-grid-row-align: center;
      align-self: center;
}

.baseShadow {
  position: absolute;
  background-color: #a1a6b1;
  width: 275px;
  height: 60px;
  border-radius: 130px / 30px;
  top: 270px;
  z-index: -40;
  -ms-flex-item-align: center;
      -ms-grid-row-align: center;
      align-self: center;
}

.tree {
  position: absolute;
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-bottom: 70px solid #8caba1;
  margin-top: 67px;
  margin-left: -80px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.tree:after {
  position: absolute;
  content: "";
  width: 0;
  height: 0;
  border-right: 20px solid transparent;
  border-bottom: 70px solid #7e9990;
}

.tree4 {
  position: absolute;
  width: 0;
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-bottom: 100px solid #516463;
  margin-top: 65px;
  margin-left: -50px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.tree4:after {
  position: absolute;
  content: "";
  width: 0;
  height: 0;
  border-right: 30px solid transparent;
  border-bottom: 100px solid #5a706e;
}

.tree2 {
  position: absolute;
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 70px solid #5a706e;
  margin-top: 67px;
  margin-left: 70px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.tree2:after {
  position: absolute;
  content: "";
  width: 0;
  height: 0;
  border-right: 20px solid transparent;
  border-bottom: 70px solid #516463;
}

.tree3 {
  position: absolute;
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-bottom: 80px solid #7e9990;
  margin-top: 69px;
  margin-left: -20px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.tree3:after {
  position: absolute;
  content: "";
  width: 0;
  height: 0;
  border-right: 20px solid transparent;
  border-bottom: 80px solid #8caba1;
}

.roof {
  position: absolute;
  width: 0;
  height: 0;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  border-bottom: 31.25px solid #ba616d;
  margin-top: 58px;
  margin-left: 30px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.cabin {
  position: absolute;
  background: #534f54;
  display: inline-block;
  height: 40px;
  margin-top: 93px;
  margin-left: 30px;
  width: 80px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.cabin:before {
  border-bottom: 25px solid #534f54;
  border-left: 40px solid transparent;
  border-right: 40px solid transparent;
  content: "";
  height: 0;
  left: 0;
  position: absolute;
  top: -25px;
  width: 0;
}

JavaScript

(function() {
  var c1 = document.getElementById("c1");
  var c2 = document.getElementById("c2");
  var ctx1 = c1.getContext("2d");
  var ctx2 = c2.getContext("2d");
  c1.height = 300;
  c1.width = 300;
  c2.height = 300;
  c2.width = 300;

ctx1.fillStyle = "white";
  ctx2.fillStyle = "white";
  var c1Flakes = [];
  var c2Flakes = [];

function Flake(r) {
    this.x = Math.random() * 300;
    this.y = Math.random() * 250;
    this.r = r;
  }

for (var i = 0; i <= 80; i++) {
    var flake = new Flake(2);
    c1Flakes.push(flake);
  }

for (var i = 0; i <= 80; i++) {
    var flake = new Flake(3);
    c2Flakes.push(flake);
  }

for (var i = 0; i < c2Flakes.length; i++) {
      ctx2.beginPath();
      ctx2.arc(c2Flakes[i].x, c2Flakes[i].y, c2Flakes[i].r, 0, Math.PI * 2);
      ctx2.fill();
      if (c2Flakes[i].y <= 245){
      c2Flakes[i].y += .6;
      }
      else{
        c2Flakes[i].y = 0;
      }
    }
    requestAnimationFrame(render);
  }
  render();
})();

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