css实现页面滚动左侧导航指示文字变动效果代码-html代码-BFW代码库

代码语言：html

代码描述：css实现页面滚动左侧导航指示文字变动效果代码

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">
  


  
  
  
<style>
@import url('https://fonts.googleapis.com/css2?family=Gloria+Hallelujah&display=swap');
/* @import url('https://unpkg.com/normalize.css') layer(normalize); */
@import 'normalize.css' layer(normalize);

@layer normalize, base, demo;

@layer demo {
  :root {
    --heading: 35svh;
    timeline-scope: --main;
  }

  header a {
    padding: 1rem 2rem;
    border-radius: 100px;
    background: linear-gradient(68deg, hsl(45 80% 60%), orange);
    text-decoration: none;
    color: hsl(0 0% 10%);
    font-weight: 600;
  }

  .arrow {
    position: absolute;
    left: 90%;
    top: calc(100% + 1rem);
    width: 70px;
    z-index: 9999;
    font-size: 14px;
  }

  .arrow svg {
    scale: 1 1;
    rotate: -90deg;
  }

  .arrow span {
    position: absolute;
    font-family: 'Gloria Hallelujah', cursive;
    rotate: -10deg;
    left: 0%;
    top: 105%;
    white-space: nowrap;
  }

  body {
    -webkit-animation: indicate both steps(2);
            animation: indicate both steps(2);
    animation-timeline: --main;
    animation-range: entry 50% exit 0%;
    counter-set: section var(--section);
  }

  main::after {
    content: 'Debug: ' counter(section);
    position: fixed;
    pointer-events: none;
    top: 6rem;
    right: 0.25rem;
    background: color-mix(in hsl, canvasText, canvas 20%);
    color: canvas;
    padding: 1rem;
    border-radius: 12px;
    border: 4px double canvas;
    font-size: 14px;
    font-family: monospace;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.25s;
  }

  [data-debug='true'] main::after {
    opacity: 1;
  }

  @property --section {
    inherits: true;
    syntax: '<integer>';
    initial-value: 0;
  }
  @-webkit-keyframes indicate {
    to {
      --section: 2;
    }
  }
  @keyframes indicate {
    to {
      --section: 2;
    }
  }

  header {
    display: grid;
    place-items: center;
    align-content: end;
    height: 50svh;
  }

  header h1 {
    --font-level: 5;
    line-height: 1;
    text-align: center;
    position: relative;
  }

  footer {
    padding: 2rem;
  }

  main {
    --font-level: 0.75;
    font-weight: 300;
    margin-top: calc(var(--heading) * -1);
    view-timeline: --main;
    @media (min-width: 768px) {
      margin-block: 25svh;
    }
  }

  h1 {
    --font-level: 3.5;
    display: flex;
    gap: 0.5ch;
  }

  .track {
    display: grid;
    position: relative;
    -webkit-mask: linear-gradient(#0000, #000 0.1lh calc(100% - 0.1lh), #0000);
            mask: linear-gradient(#0000, #000 0.1lh calc(100% - 0.1lh), #0000);
  }
  
  [data-debug=true] .track {
    -webkit-mask: unset;
            mask: unset;
    outline: 2px hsl(45 80% 65%) dashed;
  }
  
  [data-debug=true] .track::after {
    content: "";
    position: absolute;
    bottom: 100%;
    width: 100%;
    height: 300%;
    background: color-mix(in hsl, canvas, #0000 90%);
  }

  .runner {
    display: grid;
    transition: translate 0.25s;
    translate: 0 calc(var(--section) * -100%);
  }

  .runner > * {
    grid-area: 1 / 1;
    background: linear-gradient(68deg, hsl(45 80% 60%), orange);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
  }

  .track span:nth-of-type(2) {
    translate: 0 100%;
  }
  .track span:nth-of-type(3) {
    translate: 0 200%;
  }

  .content {
    width: 900px;
    max-width: calc(100vw - 2rem);

    @media (min-width: 768px) {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 2rem;
    }
  }

  aside {
    height: var(--heading);
    position: sticky;
    top: 0;
    @media (min-width: 768px) {
      height: 100svh;
    }
  }

  section {
    height: 50svh;
  }

  p {
    opacity: 0.8;
  }

  :where(aside, section) {
    display: flex;
    justify-content: center;
    flex-direction: column;
  }
}

@layer base {
  :root {
    --font-size-min: 16;
    --font-size-max: 20;
    --font-ratio-min: 1.2;
    --font-ratio-max: 1.33;
    --font-width-min: 375;
    --font-width-max: 1500;
  }

  :where(.fluid) {
    --fluid-min: .........完整代码请登录后点击上方下载按钮下载查看