css实现单个div在a4纸张上用印章盖章动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：css实现单个div在a4纸张上用印章盖章动画效果代码

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">





    <style>
        @charset "UTF-8";
        @import url("https://fonts.googleapis.com/css2?family=Cedarville+Cursive&family=Special+Elite&display=swap");
        body {
          display: grid;
          place-items: center;
          height: 100vh;
          overflow: hidden;
          background: radial-gradient(circle at bottom, #444, #000);
        }
        body:after {
          content: "How to Animate with CSS \a by Cobra Winfrey";
          white-space: pre;
          width: 800px;
          text-align: center;
          font-family: "Cedarville Cursive";
          position: absolute;
          font-size: 30px;
          top: calc(50% + 40px);
          left: calc(50% + 20px);
          z-index: 0;
          color: #666;
          line-height: 1.25;
          transform: translate(-50%, 0px) rotate(-5deg);
        }
        body:before {
          content: "";
          position: absolute;
          width: 700px;
          height: 800px;
          transform: rotate(-5deg);
          top: calc(50% - 50px);
          left: calc(50% - 350px);
          box-shadow: 0 0 0 1px #ccc;
          background: radial-gradient(circle at center, #222 10px, rgba(0, 0, 0, 0.001) 5px) calc(50% - 300px) 50px/100% 200px, linear-gradient(to right, #e3bebd, #e3bebd) 100px 0px/2px 100% no-repeat, linear-gradient(to bottom, #fff 100px, rgba(0, 0, 0, 0.001) 50px), repeating-linear-gradient(to bottom, #769fda 1px, rgba(0, 0, 0, 0.001) 1px, rgba(0, 0, 0, 0.001) 20px, #769fda 20px, #769fda 21px), #fff;
          -webkit-mask: linear-gradient(to bottom, #000 25%, rgba(0, 0, 0, 0.001) 75%);
                  mask: linear-gradient(to bottom, #000 25%, rgba(0, 0, 0, 0.001) 75%);
        }
        body div {
          z-index: 9;
          width: 200px;
          height: 200px;
          position: relative;
          transform-style: preserve-3d;
          perspective: 500px;
          perspective-origin: 50% 0px;
          transform: translate(-30px, -35px);
          -webkit-animation: brighten 2s ease-in-out infinite -1s;
                  animation: brighten 2s ease-in-out infinite -1s;
        }
        @-webkit-keyframes brighten {
          0% {
            filter: brightness(0.9);
          }
          20% {
            filter: brightness(1);
          }
          80% {
            filter: brightness(1);
          }
          100% {
            filter: brightness(0.9);
          }
        }
        @keyframes brighten {
          0% {
            filter: brightness(0.9);
          }
          20% {
            filter: brightness(1);
          }
          80% {
            filter: brightness(1);
          }
          100% {
            filter: brightness(0.9);
          }
        }
        body div:before, body div:after {
          content: "";
          position: absolute;
        }
        body div:after {
          font-family: "Special Elite";
          content: "F﹘";
          color: #f21e41;
          font-weight: 900;
          font-size: 40px;
          width: 60px;
          height: 60px;
          transform: rotate(-5deg);
          border-radius: 100%;
          box-shadow: inset 0 0 0 6px #f21e41;
          display: flex;
          justify-content: center;
          align-items: center;
          line-height: 1;
          letter-spacing: -15px;
          box-sizing: border-box;
          padding: 10px 0 0 5px;
          -webkit-mask: linear-gradient(to bottom, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.25)), url("data:image/png;base64,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.........完整代码请登录后点击上方下载按钮下载查看