纯css实现的一个折叠式下拉菜单效果代码-html代码-BFW代码库

代码语言：html

代码描述：纯css实现的一个折叠式下拉菜单效果代码

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 href="https://fonts.googleapis.com/css?family=Raleway" rel="stylesheet">



    <style>
        * {
          margin: 0;
          padding: 0;
          box-sizing: border-box;
        }
        
        body {
          background-color: #1e1e1e;
          background-image: url(//repo.bfw.wiki/bfwrepo/image/61cc666100de3.png);
          background-size: cover;
          height: 100vh;
        
          font-family: "Raleway", sans-serif;
          letter-spacing: 1px;
        }
        h1 {
          text-align: center;
          color: #fff;
          padding-top: 20px;
        }
        
        ul {
          list-style: none;
        }
        
        nav {
          height: 40px;
          margin: 40px auto;
          background-color: rgba(23, 23, 50, 0.7);
          text-align: center;
          border-radius: 4px;
        }
        .main {
          display: flex;
          justify-content: center;
        }
        .main > li {
          margin: 0 2%;
        }
        .main > li a{
          border-left:1px solid rgba(23, 23, 50, 1);
        }
        a {
          text-decoration: none;
          color: #ffe;
          text-transform: capitalize;
          font-family: monospace;
          display: block;
          padding: 10px 15px;
          font-size: 16px;
          transition: background-color 0.5s ease-in-out;
        
          font-family: "Raleway", sans-serif;
        }
        
        a:hover {
          background-color: #631818;
        }
        
        .drop li {
          opacity: 0;
          transform-origin: top center;
        }
        
        .drop li a {
          background-color: rgba(23, 23, 50, 0.7);
          padding: 10px 0;
        }
        
        /*------------- menu1 animation -------------------*/
        
        .main li:hover .menu1 li:first-of-type {
          animation: menu1 0.3s ease-in-out forwards;
          animation-delay: 0.3s;
        }
        
        .main li:hover .menu1 li:nth-of-type(2) {
          animation: menu1 0.3s ease-in-out forwards;
          animation-delay: 0.6s;
        }
        
        .main li:hover .menu1 li:nth-of-type(3) {
          animation: menu1 0.3s ease-in-out forwards;
          animation-delay: 0.9s;
        }
        
        .main li:hover .menu1 li:last-of-type {
          animation: menu1 0.3s ease-in-out forwards;
          animation-delay: 1.2s;
        }
        
        @keyframes menu1 {
          from {
            opacity: 0;
            transform: translateX(30px) rotateY(90deg);
          }
          to {
            opacity: 1;
            transform: translateX(0) rotateY(0);
          }
        }
        
        /*------------- menu2 animation -------------------*/
        
        .main li:hover .menu2 li:first-of-type {
          animation: menu2 0.3s ease-in-out forwards;
          animation-delay: 0.3s;
        }
        
        .main li:hover .menu2 li:nth-of-type(2) {
          animation: menu2 0.3s ease-in-out forwards;
          animation-delay: 0.6s;
        }
        
        .main li:hover .menu2 li:nth-of-type(3) {
          animation: menu2 0.3s ease-in-out forwards;
          animation-delay: 0.9s;
        }
        
        .main li:hover .menu2 li:last-of-type {
          animation: menu2 0.3s ease-in-out forwards;
          animation-delay: 1.2s;
        }
        
        @keyframes menu2 {
          0% {
            opacity: 0;
            transform: scale(0.7);
          }
          50% {
            opacity: 0.5;
            transform: scale(1.1);
          }
          100% {
            opacity: 1;
            transform: scale(1);
          }
        }
        
        /*------------- menu3 animation -------------------*/
        
        .main li:hover .menu3 li:first-of-type {
          animation: menu3 0.3s ease-in-out forwards;
          animation-delay: 0.3s;
        }
        
        .main li:hover .menu3 li:nth-of-type(2) {
          animation: menu3 0.3s ease-in-out forwards;
          animation-delay: 0.6s;
        }
        
        .main li:hover .menu3 li:nth-of-type(3) {
          animation: menu3 0.3s ease-in-out forwards;
          animation-delay: 0.9s;
        }
        
        .main li:hover .menu3 li:last-of-type {
          animation: menu3 0.3s ease-in-out forwards;
          animation-delay: 1.2s;
        }
        
        @keyframes menu3 {
          0% {
            opacity: 0;
            transform: translateX(20px);
          }
          100% {
            opacity: 1;
            transform: translateX(0);
          }
        }
        
        /*------------- menu4 animation -------------------*/
        
        .main li:hover .menu4 li:first-of-type {
          animation: menu4 0.3s ease-in-out forwards;
          animation-delay: 0.3s;
        }
        
        .main li:hover .menu4 li:nth-of-type(2) {
          animation: menu4 0.3s ease-in-out forwards;
          animation-delay: 0.6s;
        }
        
        .main li:hover .menu4 li:nth-of-type(3) {
          animation: menu4 0.3s ease-in-out forwards;
          animation-delay: 0.9s;
        }
        
        .main li:hover .menu4 li:last-of-type {
          animation: menu4 0.3s ease-in-out forwards;
          animation-delay: 1.2s;
        }
        
        @keyframes menu4 {
          0% {
            opacity: 0;
            transform: translateX(50px) rotate(-90deg);
          }
          100% {
            opacity: 1.........完整代码请登录后点击上方下载按钮下载查看