css实现悬浮按钮点击弹出子菜单效果代码-html代码-BFW代码库

代码语言：html

代码描述：css实现悬浮按钮点击弹出子菜单效果代码

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">

    <link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/ionicons.min.css">
    <style>
        .plus {
          width: 100px;
          cursor: pointer;
          transition: all 0.3s ease 0s;
          height: 100px;
          background: #ffe581;
          border-radius: 50%;
          display: flex;
          position: relative;
        }
        .plus__line {
          width: 6px;
          height: 50px;
          background: #000;
          border-radius: 10px;
          position: absolute;
          left: calc(50% - 3px);
          top: calc(50% - 25px);
        }
        .plus__line--h {
          transform: rotate(90deg);
        }
        .plus__line--v {
          display: flex;
          align-items: center;
          justify-content: space-around;
          overflow: hidden;
          transition: all 0.4s ease 0s;
        }
        .plus__link {
          color: #fff;
          font-size: 30px;
          opacity: 0;
          visibility: hidden;
          transition: 0.3s ease 0s;
          transform: scale(0.5);
        }
        .plus--active {
          height: 32px;
          border-radius: 30px;
        }
        .plus--active .plus__line--v {
          height: 68px;
          top: calc(-100% - 60px);
          padding: 0 5px;
          box-sizing: border-box;
          width: 220px;
          border-radius: 60px;
          left: calc(50% - 110px);
        }
        .plus--active .plus__link {
          opacity: 1;
          visibility: visible;
          transform: scale(1);
          transition-delay: 0.05s;
        }
        
        .centered {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          justify-content: center;
        }
        
        html, body {
          height: 100%;
        }
        
        body {
          background-color: #ffffff;
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