<div class="card">
  <div class="card__object">
    <div class="card__avatar">
      <img src="https://assets.codepen.io/1061/internal/avatars/users/default.png?fit=crop&format=auto&height=80&version=1&width=80" />
    </div>
  </div>

  <div class="card__body">
    <h3>Alan Dong</h3>
    <h4>Digital Product Designer</h4>
    <p>Build it in a scalable way, we moved slow to move fast.</p>
    <div><a href="#" class="btn">View Profile</a></div>
  </div>
</div>

<div class="bulb-container">
  <button class="bulb">
    <div class="bulb__image">
      <img src="//www.w3cplus.com/sites/default/files/blogs/2020/2002/bulb-on.png" alt="Swining Light Bulb" />
    </div>
  </button>
</div>

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

@media screen and (min-width: 112em) {
  html {
    font-size: 112.5%;
  }
}

@media screen and (min-width: 136em) {
  html {
    font-size: 125%;
  }
}

body {
  margin: 0px;
  padding: 0px;
  width: 100vw;
  min-height: 100vh;
  font-family: helvetica;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
}

.card {
  width: 30vw;
  min-height: 60vmin;
  border-radius: 8px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

@media screen and (max-width: 414px) {
  .card {
    width: 80vw;
  }
}

.card__object {
  height: 15vmin;
  width: 100%;
  border-radius: 8px 8px 0 0;
  display: flex;
  justify-content: center;
}

.card__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  padding: 5px;
  transform: translateY(calc(15vmin - 40px));
}

.card__avatar img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
}

.card__body {
  min-height: 28vmin;
  padding: 50px 20px 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-radius: 0 0 8px 8px;
}

.card__body h3,
.card__body h4 {
  box-sizing: border-box;
  line-height: 1.6;
  font-weight: bold;
}

.card__body h4 {
  opacity: 0.4;
}

.card__body p {
  font-size: 16px;
  margin-bottom: 30px;
}

.card__body .btn {
  padding: 12px 20px;
  border: none;
  border-radius: 32px;
  font-size: 12px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.1s ease-in;
}

.card__body .btn:hover {
  background: transparent;
  border: 1px solid currentColor;
}

img {
  max-width: 100%;
}

.bulb-container {
  font-size: 1rem;
  perspective: 800px;
  position: absolute;
  z-index: 20;
  padding-top: 0.5em;
  margin-bottom: 0.5em;
  top: 0;
  right: 20px;
}
.bulb-container::after {
  content: "";
  width: 1.125em;
  height: 0.5em;
  background: url(//www.w3cplus.com/sites/default/files/blogs/2020/2002/bulb-top.png);
  background-size: 100% 100%;
  position: absolute;
  left: calc(50% - 0.5625em);
  top: 0;
}

.bulb {
  font-size: 1rem;
  width: 3.375em;
  height: 11.5em;
  margin: 0 auto;
  transform-origin: center top;
  animation: swing 3s ease-in-out infinite alternate;
  position: relative;
  transform-style: preserve3d;
  transition: transform 0.5s ease-out;
  cursor: pointer;
  display: block;
  background: none;
  border: none;
  -webkit-appearance: none;
  padding: 0;
}
.bulb:focus {
  outline-offset: 1rem;
  outline: none;
}

.bulb:hover .bulb__image img,
.bulb:focus .bulb__image img,
.bulb:active .bulb__image img {
  outline: none;
  animation: flicker 2s linear infinite alternate;
}

.bulb:hover .bulb__image::before,
.bulb:focus .bulb__image::before,
.bulb:active .bulb__image::before {
  outline: none;
  animation: flicker-light 2s linear infinite alternate;
}

.bulb__image {
  outline: none;
  transform-style: preserve3d;
  display: block;
  transform-origin: center top;
  animation: scale 2.5s -1.5s ease-in-out infinite alternate;
  position: relative;
}
.bulb__image::before {
  content: "";
  position: absolute;
  left: calc(50% - 1px);
  bottom: 0;
  width: 0.625em;
  height: 0.625em;
  background: transparent;
  border-radius: 50%;
  z-index: -1;
  box-shadow: 0 0 6.375em 4em var(--light);
  opacity: 0.6;
  transform: scaleY(0.7) translateY(-1em) translateX(0.4em);
  transform-origin: center top;
}

.bulb__image img {
  display: block;
  filter: saturate(var(--saturation));
  width: 3.375em;
}

@keyframes swing {
  0% {
    transform: rotate(4deg);
  }

  100% {
    transform: rotate(-4deg);
  }
}

@keyframes scale {
  0% {
    transform: scale(0.98);
    //transform: rotatex(-15deg);
  }

  100% {
    transform: scale(1.02);
    //transform: rotatex(15deg);
  }
}

@keyframes flicker {
  0%,
  4%,
  8%,
  12%,
  20%,
  30%,
  40%,
  50%,
  100% {
    filter: saturate(0);
  }

  2%,
  6%,
  10% {
    filter: saturate(1.4);
  }

  25%,
  35%,
  45% {
    filter: saturate(1.6);
  }

  80% {
    filter: saturate(3);
  }
}

@keyframes flicker-light {
  0%,
  4%,
  8%,
  12%,
  20%,
  30%,
  40%,
  50%,
  100% {
    filter: saturate(0);
    opacity: 0.5;
  }

  2%,
  6%,
  10% {
    filter: saturate(1.4);
    opacity: 0.6;
  }

  25%,
  35%,
  45% {
    filter: saturate(1.6);
    opacity: 0.6;
  }

  80% {
    filter: saturate(3);
    opacity: 0.7;
  }
}

:root {
  --color: #333;
  --primary-color: #ffffff; /* 主色 */
  --body-bg-color: #f1f1f1; /* body背景颜色 */
  --card-box-shadow-color: #405070; /* card盒子阴影颜色 */
  --btn-bg-color: #28c3f5; /* button背景颜色 */
  --paragraph-color: gray; /* 段落文本颜色 */
  --card-object-bg-color: #eaeff8; /* card顶部背景颜色 */
  --title-color: #101c34; /* 标题2文本颜色 */
  --avatar-bg-color: #fff;
  --light: #fff;
  --saturation: 0;
  --invert: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-mode: "dark";
  }

  :root:not([data-user-color-scheme]) {
    --color: #fff;
    --primary-color: #1a1515; /* 主色 */
    --body-bg-color: #1a1818; /* body背景颜色 */
    --card-box-shadow-color: #6a716e; /* card盒子阴影颜色 */
    --btn-bg-color: #ff5722; /* button背景颜色 */
    --paragraph-color: #c7c1c1; /* 段落文本颜色 */
    --card-object-bg-color: #282035; /* card顶部背景颜色 */
    --title-color: #ffffff; /* 标题2文本颜色 */
    --avatar-bg-color: #673ab7;
    --saturation: 1;
    --invert: 0.8;
  }
}

[data-user-color-scheme="dark"] {
  --color: #fff;
  --primary-color: #1a1515; /* 主色 */
  --body-bg-color: #1a1818; /* body背景颜色 */
  --card-box-shadow-color: #6a716e; /* card盒子阴影颜色 */
  --btn-bg-color: #ff5722; /* button背景颜色 */
  --paragraph-color: #c7c1c1; /* 段落文本颜色 */
  --card-object-bg-color: #282035; /* card顶部背景颜色 */
  --title-color: #ffffff; /* 标题2文本颜色 */
  --avatar-bg-color: #673ab7;
  --saturation: 1;
  --highlight: #00fdcf;
  --invert: 0.8;
}

body {
  background-color: var(--body-bg-color);
  color: var(--color);
}

.card {
  background: var(--primary-color);
  box-shadow: 0px 1px 10px 1px var(--card-box-shadow-color);
}

.card__object {
  background-color: var(--card-object-bg-color);
}

.card__avatar {
  background-color: var(--avatar-bg-color);
}

.card__body h4 {
  color: var(--title-color);
}

.card__body p {
  color: var(--paragraph-color);
}

.card__body .btn {
  background: var(--btn-bg-color);
  color: var(--primary-color);
}

.card__body .btn:hover {
  color: var(--btn-bg-color);
}

const blubEle = document.querySelector(".bulb");
const docEle = document.documentElement;

if (
  window.matchMedia &&
  window.matchMedia("(prefers-color-scheme: dark)").matches
) {
  console.log("dark");
  docEle.setAttribute("data-user-color-scheme", "dark");
} else {
  console.log("light");
  docEle.setAttribute("data-user-color-scheme", "light");
}

blubEle.addEventListener("click", () => {
  if (
    window.matchMedia &&
    window.matchMedia("(prefers-color-scheme: dark)").matches &&
    docEle.toggleAttribute("dark")
  ) {
    console.log("dark");
    docEle.removeAttribute("data-user-color-scheme");
    docEle.setAttribute("data-user-color-scheme", "light");
  } else {
    console.log("light");
    docEle.removeAttribute("data-user-color-scheme");
    docEle.setAttribute("data-user-color-scheme", "dark");
  }
});