纯css实现一群气球上升动画-html代码-BFW代码库

代码语言：html
所属分类：动画
代码描述：纯css实现一群气球上升动画
下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">

<style>
:root {
  --desired-size: 20;
  --coefficient: 1vmin;
  --size: calc(var(--desired-size) * var(--coefficient));
  --primary-color: hsl(320, 100%, 50%);
  --chord: hsl(45, 100%, 40%);
  --shine: hsla(0, 0%, 100%, 0.75);
}

body {
  min-height: 100vh;
  display: -webkit-box;
  display: flex;
  -webkit-box-align: center;
          align-items: center;
  -webkit-box-pack: center;
          justify-content: center;
  background: hsl(180, 100%, 95%);
}

.balloon {
  --primary-color: hsla(var(--h, 0), 100%, 50%, 0.8);
  --size: calc(var(--s, 10) * var(--coefficient));
  height: calc(1.2 * var(--size));
  width: var(--size);
  background: var(--primary-color);
  border-radius: 50% 50% 50% 50% / 45% 45% 55% 55%;
  position: absolute;
  top: 50%;
  left: calc(var(--x, 50) * 1%);
  -webkit-animation: float calc(var(--d, 1) * 1s) calc(var(--delay, 0) * -1s) infinite linear both;
          animation: float calc(var(--d, 1) * 1s) calc(var(--delay, 0) * -1s) infinite linear both;
}

.balloon:before {
  content: '';
  position: absolute;
  width: 20%;
  height: 30%;
  background: blue;
  top: 8%;
  left: 16%;
  border-radius: 50%;
  -webkit-transform: rotate(40deg);
          transform: rotate(40deg);
  background: var(--shine);
}


.balloon__handle {
  width: 2%;
  height: 60%;
  background: var(--chord);
  top: 100%;
  left: 50%;
  -webkit-transform: translate(-50%, 0);
          transform: translate(-50%, 0);
  position: absolute;
}
.balloon__handle:before,
.balloon__handle:after {
  content: '';
  position: absolute;
  height: 5%;
  -webkit-transform: translate(-50%, 0);
          transform: translate(-50%, 0);
  border-radius: 25% / 50%;
  left: 50%;
}

.balloon__handle:before {
  top: 0;
  background: var(--chord);
  width: 500%;
}

.balloon__handle:after {
  top: 5%;
  background: var(--primary-color);
  width: 700%;
}


@-webkit-keyframes float {
  from {
    -webkit-transform: translate(-50%, -50%) translate(0, 100vh);
            transform: translate(-50%, -50%) translate(0, 100vh);
  }
  to {
    -webkit-transform: translate(-50%, -50%) translate(0, -100vh);
            transform: translate(-50%, -50%) translate(0, -100vh);
  }
}


@keyframes float {
  from {
    -webkit-transform: translate(-50%, -50%) translate(0, 100vh);
            transform: translate(-50%, -50%) translate(0, 100vh);
  }
  to {
    -webkit-transform: translate(-50%, -50%) translate(0, -100vh);
            transform: translate(-50%, -50%) translate(0, -100vh);
  }
}
</style>

</head>
<body translate="no">
<div class="balloon" style="--x: 18; --h: 232; --s: 12; --d: 4; --delay: 2;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 68; --h: 67; --s: 45; --d: 3; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 45; --h: 302; --s: 42; --d: 9; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 75; --h: 54; --s: 16; --d: 3; --delay: 3;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 31; --h: 243; --s: 4; --d: 2; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 86; --h: 328; --s: 39; --d: 1; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 99; --h: 195; --s: 3; --d: 4; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 54; --h: 311; --s: 16; --d: 6; --delay: 3;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 86; --h: 287; --s: 26; --d: 6; --delay: 4;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 93; --h: 72; --s: 4; --d: 5; --delay: 5;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 94; --h: 173; --s: 43; --d: 3; --delay: 3;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 43; --h: 25; --s: 18; --d: 3; --delay: 3;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 52; --h: 242; --s: 49; --d: 7; --delay: 5;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 26; --h: 163; --s: 24; --d: 6; --delay: 6;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 93; --h: 21; --s: 15; --d: 6; --delay: 5;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 46; --h: 157; --s: 35; --d: 9; --delay: 8;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 48; --h: 349; --s: 17; --d: 8; --delay: 5;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 55; --h: 122; --s: 5; --d: 3; --delay: 2;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 82; --h: 335; --s: 42; --d: 9; --delay: 6;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 61; --h: 216; --s: 48; --d: 2; --delay: 2;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 97; --h: 330; --s: 4; --d: 6; --delay: 3;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 65; --h: 91; --s: 50; --d: 10; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 42; --h: 165; --s: 37; --d: 10; --delay: 4;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 48; --h: 22; --s: 40; --d: 1; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 78; --h: 169; --s: 30; --d: 10; --delay: 10;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 35; --h: 189; --s: 17; --d: 1; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 76; --h: 94; --s: 39; --d: 3; --delay: 3;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 35; --h: 128; --s: 19; --d: 6; --delay: 3;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 29; --h: 215; --s: 39; --d: 8; --delay: 5;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 73; --h: 83; --s: 20; --d: 1; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 49; --h: 17; --s: 45; --d: 10; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 32; --h: 144; --s: 17; --d: 9; --delay: 9;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 36; --h: 247; --s: 23; --d: 2; --delay: 2;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 72; --h: 194; --s: 3; --d: 8; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 81; --h: 44; --s: 18; --d: 4; --delay: 2;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 50; --h: 319; --s: 26; --d: 4; --delay: 4;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 96; --h: 49; --s: 29; --d: 2; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 28; --h: 183; --s: 20; --d: 4; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 1; --h: 281; --s: 50; --d: 10; --delay: 1;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 10; --h: 204; --s: 43; --d: 10; --delay: 8;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 98; --h: 166; --s: 12; --d: 8; --delay: 2;">
<div class="balloon__handle"></div>
</div>
<div class="balloon" style="--x: 42; --h: 70; --s: 8; --d: 5; --delay: 2;">
<div class="balloon__handle"></div>
</div>
<div class="balloon.........完整代码请登录后点击上方下载按钮下载查看