<div></div>

<section class="tutorials">
  <a href="https://s.juejin.cn/ds/idkVFyE1/" target="_blank">
    <svg t="1696988571607" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="4422" width="200" height="200">
      <path d="M924.8 576.64v-115.2c12.8-13.44 13.44-26.88 12.8-34.56-3.2-30.08-36.48-42.24-47.36-46.72-79.36-30.08-226.56-89.6-307.84-122.88-49.28-24.32-65.28-19.84-113.28-0.64-12.8 5.12-224.64 83.84-306.56 117.76-44.8 18.56-51.2 46.08-51.2 61.44 0 25.6 17.92 48.64 50.56 62.08L259.84 537.6v257.28l8.32 8.32c3.84 3.84 91.52 92.16 252.16 92.16 150.4 0 236.16-88.96 240-92.8l7.68-8.32V540.16l36.48-15.36-1.28 52.48-29.44 49.28 88.96 84.48 98.56-85.76-36.48-48.64zM710.4 771.2c-22.4 18.56-88.96 67.2-190.08 67.2-111.36 0-179.84-48.64-202.88-67.2V561.28l144.64 58.88h0.64c46.08 17.28 81.28 16 125.44-3.2l122.24-51.84v206.08z m154.24-138.24l-17.92-16.64 13.44-22.4 2.56-102.4c4.48-14.08-0.64-25.6-8.32-32-7.68-7.04-21.76-11.52-36.48-2.56L565.12 563.84c-30.08 13.44-49.92 14.08-81.92 2.56l-298.88-121.6c-7.68-3.2-12.16-6.4-14.08-8.96 1.92-1.92 6.4-5.12 14.72-8.96 81.92-33.92 302.72-116.48 305.28-117.12h0.64c38.4-15.36 38.4-15.36 67.2-0.64l1.92 0.64c80.64 32.64 226.56 92.16 307.2 122.88v163.2l16 21.12-18.56 16z" p-id="4423"></path>
    </svg>
  </a>

</section>
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: #222;
}

div {
  width: 100vw;
  height: 100vh;
  background: url(https://assets.codepen.io/489403/grand_canyon.jpeg) no-repeat
    center;
  background-size: cover;

  mask-image: linear-gradient(
    to right,
    #000,
    #000 50%,
    transparent 50%,
    transparent 100%
  );
  mask-size: 10vw 100%;
  mask-repeat: repeat;
}

.tutorials {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 9999;
  width: 64px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #3f517e;
  padding: 0.5rem;
  display: grid;
  place-content: center;
  transition: all 0.28s linear;

  &:hover {
    background: #4161b2;
  }

  & svg {
    display: block;
    width: 100%;
    height: 100%;
    filter: invert(1);
  }
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

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