一、用到的一些CSS技术

渐变 conic-gradient
box-shadow
clip-path
变换、过渡 transform、transition
动画 animation @keyframes
伪类、伪元素 :hover、::before、::after …
绝对布局
。。。

clip-path 生成网站
https://techbrood.com/tool?p=css-clip-path

二、实现效果

请添加图片描述

三、代码

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>卡片测试</title><style>body{margin: 0;padding: 0;height: 100vh;}.wrapper{position: relative;background: #222222;height: 100%;color: white;display: flex;align-items: center;justify-content: center;gap: 100px;padding: 10px;flex-wrap: wrap;}.wrapper .card-box{position: relative;width: 240px;height: 360px;text-align: center;box-shadow: 0 0 0 14px #080808,0 24px 56px var(--clr);  background-color: var(--clr);}.wrapper .card-box .title.text{line-height: 4em;}.wrapper .card-box .text{line-height: 19em;letter-spacing: 8px;font-weight: 900;transform: scale(0);transition: 1.2s;filter: blur(4px);}.wrapper .card-box:hover .text{transform: scale(1);filter: blur(0);}.wrapper .card-box .mask{position: absolute;inset: 20px;box-shadow: 0 0 0 18px #080808;}.wrapper .card-box .icon{height: 100px;width: 100px;border-radius: 50%;margin: auto;position: absolute;inset: 0;border: 3px solid white;background: conic-gradient(var(--clr), green, var(--clr), yellow, var(--clr));transform: translateY(180px) scale(.1);opacity: 0;transition: all .8s 0s;}.wrapper .card-box:hover .icon{transition-delay: .4s;animation: 3s linear 1.05s infinite spin;transform: translateY(0) scale(1);opacity: 1;}@keyframes spin {0%{transform: rotate(0deg);}100%{transform: rotate(360deg);}}.wrapper .card-box .mask span,.wrapper .card-box .mask::after,.wrapper .card-box .mask::before{background: #161616;position: absolute;inset: 0;transition: .25s;clip-path: polygon(0 0, 50% 40%, 100% 0);}.wrapper .card-box:hover .mask span{transition-delay: 0;clip-path: polygon(0 0, 50% 0%, 100% 0);}.wrapper .card-box .mask::before{transition-delay: .2s;clip-path: polygon(0 0, 40% 50%, 50% 100%, 0% 100%);content: "";}.wrapper .card-box:hover .mask::before{clip-path: polygon(0 0, 0 100%, 50% 100%, 0% 100%);}.wrapper .card-box .mask::after{transition-delay: .4s;clip-path: polygon(100% 0, 60% 50%, 50% 100%, 100% 100%);content: "";}.wrapper .card-box:hover .mask::after{clip-path: polygon(100% 0, 100% 100%, 50% 100%, 100% 100%);}</style>
</head>
<body><div class="wrapper"><div class="card-box" style="--clr: red;"><h3 class="title text">啥也没有<br><span class="detail text">好耶</span></h3><div class="icon"></div><div class="mask"><span></span></div></div><div class="card-box" style="--clr: blue;"><h3 class="title text">啥也不是<br><span class="detail text">好耶</span></h3><div class="icon"></div><div class="mask"><span></span></div></div><div class="card-box" style="--clr: violet;"><h3 class="title text">啥也啥也<br><span class="detail text">好耶</span></h3><div class="icon"></div><div class="mask"><span></span></div></div></div></body>
</html>