滚动弹出列表动画效果-html代码-BFW代码库

滚动弹出列表动画效果

代码语言：html

代码描述：滚动弹出列表动画效果

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>
#btn--yp {
  box-sizing: content-box;
  position: fixed;
  z-index: 9;
  bottom: 1em;
  right: 1em;
  border: solid 1em transparent;
  width: 4.625em;
  height: 3.25em;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/2017/icon-yp.svg) 50%/cover content-box;
  font: 16px/ 1.25 trebuchet ms, sans-serif;
  text-indent: 200vw;
  text-shadow: none;
  filter: grayscale(1) drop-shadow(0 0 1px #e8e0e0);
  transition: .5s;
  white-space: nowrap;
}
#btn--yp:before {
  box-sizing: inherit;
  position: absolute;
  left: 0;
  bottom: 100%;
  margin: 1em -.5em;
  padding: .5em;
  width: 100%;
  border-radius: 5px;
  background: #e8e0e0;
  color: #000;
  text-align: center;
  text-decoration: none;
  text-indent: 0vw;
  white-space: normal;
  animation: float 1s ease-in-out infinite alternate;
  content: attr(data-txt);
}
#btn--yp:hover, #btn--yp:focus {
  outline: none;
  filter: grayscale(0) drop-shadow(0 0 1px crimson);
}

@keyframes float {
  to {
    transform: translateY(0.75em);
  }
}
@property --floor {
  syntax: '<integer>';
  initial-value: 0;
  inherits: true;
}
* {
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
}

body {
  overflow-x: hidden;
}

ol {
  list-style: none;
  padding: .5em 0;
  background: #ccc;
  font: 400 calc(.875em + 1.125vw)/1.375 ubuntu mono, consolas, monaco, monospace;
}

li {
  --hid: 0;
  --not-hid: calc(1 - var(--hid));
  --floor: calc((var(--i) + 1)/2 - .5);
  --mod: calc(var(--i) + 1 - var(--floor)*2);
  --sgn: calc(2*var(--mod) - 1);
  --c: hsl(calc(2*var(--i)*360/var(--n)), 85%, 65%);
  display: flex;
  overflow: hidden;
  margin: 0 auto;
  width: Min(90%, 27em);
  border-radius: 1.5em 0 0 1.5em;
  transform-origin: 1.5em 50%;
  transform: translate(calc(var(--sgn)*var(--hid)*(50vw + 50%))) rotate(var(--az)) scale(var(--not-hid));
  opacity: var(--not-hid);
.........完整代码请登录后点击上方下载按钮下载查看