css变量实现rgb色值改变颜色变化动画效果代码-html代码-BFW代码库

css变量实现rgb色值改变颜色变化动画效果代码

代码语言：html

所属分类：动画

代码描述：css变量实现rgb色值改变颜色变化动画效果代码

代码标签： css 颜色 rgb

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/css2?family=Roboto+Mono:wght@700&display=swap" rel="stylesheet">



    <style>
        @property --red {
          syntax: '<integer>';
          inherits: true;
          initial-value: 0;
        }
        @property --green {
          syntax: '<integer>';
          inherits: true;
          initial-value: 0;
        }
        @property --blue {
          syntax: '<integer>';
          inherits: true;
          initial-value: 0;
        }
        
        @keyframes red-fade {
          50% { --red: 255; }
        }
        @keyframes green-fade {
          50% { --green: 255; }
        }
        @keyframes blue-fade {
          50% { --blue: 255; }
        }
        
        :root {
          animation: red-fade 16s, green-fade 14s, blue-fade 12s;
          animation-iteration-count: infinite;
        }
        
        *, *::before, *::after {
          box-sizing: border-box;
        }
        
        body {
          display: grid;
          justify-content: center;
          align-items: center;
          min-height: 100vh;
          margin: 0;
          padding: 20px;
          color: #fff;
          background-color: #333;
          background-image: linear-gradient(135deg, #111, #444);
          font: bold 1.25rem/1 'Roboto Mono', monospace;
        }
        
        .wrapper {
          display: grid;
          grid-template-columns: repeat(3, 40px) minmax(0, 50%);
          justify-content: space-around;
          gap: 10px;
          width: 600px;
          max-width: calc(100vw - 40px);
          padding: 20px;
          border-radius: 20px;
          background-color: #0006;
        }
        
        .widget {
          display: grid;
          grid-template-rows: auto max-content max-content;
          justify-items: center;
          gap: 10px;
        }
        
        .bar {
          display: grid;
          width: 40px;
          height: 257px;
          border-radius: 5px;
          border: 1px solid #fff;
          background-color: #fff;
        }
        
        .indicator {
          align-self: end;
          height: 4px;
          margin: -2px -6px;
          border-radius: 2px;
          background-color: #fff;
        }
        
        .value::before {
          content: counter(color-value);
        }
        
        /* red */
        .red .bar {
          background-image: linear-gradient(to bottom, red, black);
        }
        .red .indicator {
          transform: translateY(calc(var(--red) * -1px));
        }
        .red .value::before {
          counter-reset: color-value var(--red);
        }
        
        /* green */
        .green .b.........完整代码请登录后点击上方下载按钮下载查看