看效果：
PixPin_2024-05-23_08-29-39.gif
HTML代码：

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>CSS发光立体</title>
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="box">
      <div class="top"></div>
      <div>
        <span style="--n: 0"></span>
        <span style="--n: 1"></span>
        <span style="--n: 2"></span>
        <span style="--n: 3"></span>
      </div>
    </div>
  </body>
</html>

CSS代码：

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #222;
}

.box div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

.box div span {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(#222, #2bf82b);
  opacity: 0.8;
  transform: rotateY(calc(90deg * var(--n))) translateZ(150px);
  border: 5px solid green;
}

.box {
  position: relative;
  width: 300px;
  height: 300px;
  transform-style: preserve-3d;
  transform: rotateX(-30deg);
  animation: rotate 5s linear infinite;
}

@keyframes rotate {
  0% {
    transform: rotateX(-30deg) rotateY(0deg);
  }
  100% {
    transform: rotateX(-30deg) rotateY(360deg);
  }
}

.top {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #333;
  box-shadow: 0 0 10px 5px green, 0 0 200px 7px greenyellow,
    0 0 200px 20px lightgreen, 0 0 30px 25px green;
  transform: rotateX(90deg) translateZ(150px);
}

.top::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-shadow: 0 0 120px rgba(0, 255, 0, 0.2), 0 0 200px rgba(0, 255, 0, 0.4),
    0 0 200px rgba(0, 255, 0, 0.4), 0 0 200px rgba(0, 255, 0, 0.4);
  filter: blur(20px);
  transform: translateZ(-350px);
}

标签: css, html

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