纯css实现泡泡上升动画效果-html代码-BFW代码库

代码语言：html
所属分类：动画
代码描述：纯css实现泡泡上升动画效果
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>
body {
  background: #1a1e23;
  margin: 0;
}

.bubbles {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.bubble {
  position: absolute;
  left: var(--bubble-left-offset);
  bottom: -75%;
  display: block;
  width: var(--bubble-radius);
  height: var(--bubble-radius);
  border-radius: 50%;
  animation: float-up var(--bubble-float-duration) var(--bubble-float-delay) ease-in infinite;
}
.bubble::before {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(136, 246, 251, 0.3);
  border-radius: inherit;
  animation: var(--bubble-sway-type) var(--bubble-sway-duration) var(--bubble-sway-delay) ease-in-out alternate infinite;
}
.bubble:nth-child(0) {
  --bubble-left-offset: 91vw;
  --bubble-radius: 7vw;
  --bubble-float-duration: 11s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 0s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(1) {
  --bubble-left-offset: 68vw;
  --bubble-radius: 6vw;
  --bubble-float-duration: 11s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 1s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(2) {
  --bubble-left-offset: 92vw;
  --bubble-radius: 9vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(3) {
  --bubble-left-offset: 7vw;
  --bubble-radius: 4vw;
  --bubble-float-duration: 10s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 0s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(4) {
  --bubble-left-offset: 70vw;
  --bubble-radius: 2vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 4s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(5) {
  --bubble-left-offset: 87vw;
  --bubble-radius: 10vw;
  --bubble-float-duration: 11s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 1s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(6) {
  --bubble-left-offset: 85vw;
  --bubble-radius: 10vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 1s;
  --bubble-sway-delay: 0s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(7) {
  --bubble-left-offset: 70vw;
  --bubble-radius: 4vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 1s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(8) {
  --bubble-left-offset: 43vw;
  --bubble-radius: 5vw;
  --bubble-float-duration: 6s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 0s;
  --bubble-sway-delay: 0s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(9) {
  --bubble-left-offset: 58vw;
  --bubble-radius: 8vw;
  --bubble-float-duration: 8s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 4s;
  --bubble-sway-delay: 3s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(10) {
  --bubble-left-offset: 57vw;
  --bubble-radius: 5vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 2s;
  --bubble-sway-delay: 0s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(11) {
  --bubble-left-offset: 41vw;
  --bubble-radius: 3vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 1s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(12) {
  --bubble-left-offset: 59vw;
  --bubble-radius: 3vw;
  --bubble-float-duration: 11s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 4s;
  --bubble-sway-delay: 1s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(13) {
  --bubble-left-offset: 78vw;
  --bubble-radius: 6vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 4s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(14) {
  --bubble-left-offset: 39vw;
  --bubble-radius: 9vw;
  --bubble-float-duration: 7s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 0s;
  --bubble-sway-delay: 1s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(15) {
  --bubble-left-offset: 38vw;
  --bubble-radius: 3vw;
  --bubble-float-duration: 11s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 4s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(16) {
  --bubble-left-offset: 91vw;
  --bubble-radius: 9vw;
  --bubble-float-duration: 9s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 0s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(17) {
  --bubble-left-offset: 56vw;
  --bubble-radius: 4vw;
  --bubble-float-duration: 12s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 0s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(18) {
  --bubble-left-offset: 92vw;
  --bubble-radius: 8vw;
  --bubble-float-duration: 10s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 1s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(19) {
  --bubble-left-offset: 0vw;
  --bubble-radius: 3vw;
  --bubble-float-duration: 12s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 1s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(20) {
  --bubble-left-offset: 12vw;
  --bubble-radius: 7vw;
  --bubble-float-duration: 8s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 2s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(21) {
  --bubble-left-offset: 78vw;
  --bubble-radius: 6vw;
  --bubble-float-duration: 11s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 4s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(22) {
  --bubble-left-offset: 12vw;
  --bubble-radius: 3vw;
  --bubble-float-duration: 12s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 1s;
  --bubble-sway-delay: 1s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(23) {
  --bubble-left-offset: 62vw;
  --bubble-radius: 2vw;
  --bubble-float-duration: 11s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 3s;
  --bubble-sway-delay: 0s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(24) {
  --bubble-left-offset: 12vw;
  --bubble-radius: 5vw;
  --bubble-float-duration: 10s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 2s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(25) {
  --bubble-left-offset: 55vw;
  --bubble-radius: 3vw;
  --bubble-float-duration: 12s;
  --bubble-sway-duration: 5s;
  --bubble-float-delay: 0s;
  --bubble-sway-delay: 4s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(26) {
  --bubble-left-offset: 84vw;
  --bubble-radius: 2vw;
  --bubble-float-duration: 9s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 2s;
  --bubble-sway-delay: 2s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(27) {
  --bubble-left-offset: 0vw;
  --bubble-radius: 3vw;
  --bubble-float-duration: 10s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 4s;
  --bubble-sway-delay: 4s;
  --bubble-sway-type: sway-right-to-left;
}
.bubble:nth-child(28) {
  --bubble-left-offset: 59vw;
  --bubble-radius: 6vw;
  --bubble-float-duration: 8s;
  --bubble-sway-duration: 4s;
  --bubble-float-delay: 1s;
  --bubble-sway-delay: 4s;
  --bubble-sway-type: sway-left-to-right;
}
.bubble:nth-child(29) {
  --bubble-left-offset: 34vw;
  --bubble-radius: 2vw;
  --bubble-float-duration: 6s;
  --bubble-sway-duration: 6s;
  --bubble-float-delay: 4s;
  --bubble-sway-de.........完整代码请登录后点击上方下载按钮下载查看