先看效果:
PixPin_2024-05-18_08-55-29.gif
HTML代码

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>CSS数据雨云效果</title>
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="container">
      <div class="cloud">
        <h2>Data Clouds Rain</h2>
      </div>
    </div>

    <script>
      const randomText = () => {
        const text = "!@#$%^&*()_+",
          letters = text[Math.floor(Math.random() * text.length)];
        return letters;
      };

      const rain = () => {
        const cloud = document.querySelector(".cloud"),
          e = document.createElement("div");
        e.classList.add("drop");
        cloud.appendChild(e);
        const left = Math.floor(Math.random() * 290),
          size = Math.random() * 1.5,
          duration = Math.random() * 1;

        e.innerText = randomText();
        e.style.left = left + "px";
        e.style.fontSize = 0.5 + size + "em";
        e.style.animationDuration = 1 + duration + "s";

        setTimeout(() => {
          cloud.removeChild(e);
        }, 2000);
      };

      setInterval(() => {
        rain();
      }, 20);
    </script>
  </body>
</html>

CSS代码

@import url("https://fonts.googleapis.com/css?family=Poppins:200,300,400,500,600,700,800,900&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

:root {
  --clr: #0f0;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #000;
}

.container {
  position: relative;
  top: 100px;
  width: 100%;
  height: 400px;
  display: flex;
  justify-content: center;

  animation: animateColor 5s linear infinite;
  border: 35px solid transparent;
}

@keyframes animateColor {
  0% {
    filter: hue-rotate(0);
  }

  100% {
    filter: hue-rotate(360deg);
  }
}

.container .cloud {
  position: relative;
  width: 300px;
  z-index: 100;
  filter: drop-shadow(0 0 35px var(--clr));
}

.container .cloud h2 {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  color: #000;
  font-size: 2em;
  z-index: 1000;
  font-weight: 400;
  padding: 0 10px;
  border-radius: 10px;
  text-transform: uppercase;
  background-color: var(--clr);
}

.container .cloud h2::before {
  content: "";
  position: absolute;
  top: -115px;
  left: 50%;
  width: 120%;
  height: 100px;
  border-radius: 100px;
  transform: translateX(-50%);
  background-color: var(--clr);
}

.container .cloud h2::after {
  content: "";
  position: absolute;
  top: -150px;
  left: 25px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-color: var(--clr);
  box-shadow: 120px -30px 0 40px var(--clr);
}

.container .cloud .drop {
  position: absolute;
  top: 60px;
  height: 20px;
  line-height: 20px;
  color: var(--clr);
  transform-origin: bottom;
  animation: animate 2s linear infinite;
}

@keyframes animate {
  0% {
    transform: translateY(0) scaleY(0);
    transform-origin: top;
  }

  10% {
    transform: translateY(0) scaleY(0.25);
    transform-origin: top;
  }

  20% {
    transform: translateY(0) scaleY(1);
  }

  70% {
    transform: translateY(300px) scaleY(1);
    transform-origin: bottom;
  }

  80% {
    transform: translateY(300px) scaleY(1);
    transform-origin: bottom;
  }

  100% {
    transform: translateY(300px) scaleY(0);
    transform-origin: bottom;
    text-shadow: -180px 0 0 var(--clr), 180px 0 0 var(--clr);
  }
}

标签: css, html

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