<div class="device device-iphone-x">
  <div class="device-frame">
    <div class="device-content">
      <div class="container">
        <figure>
          <figcaption>Card Title</figcaption>
          <img src="https://picsum.photos/1200/300?random=5" alt="">
        </figure>

        <figure>
          <figcaption>Card Title</figcaption>
          <div class="box"></div>
        </figure>
      </div>

      <div id="switch--wrapper">
        <input type="checkbox" id="switch" name="switch" />
        <label for="switch"></label>
      </div>

    </div>
  </div>
  <div class="device-stripe"></div>
  <div class="device-header"></div>
  <div class="device-sensors"></div>
  <div class="device-btns"></div>
  <div class="device-power"></div>
</div>

@import url("https://fonts.googleapis.com/css2?family=Exo:wght@600&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  width: 100vw;
  min-height: 100vh;
  font-family: "Exo", Arial, sans-serif;
  background-color: #557;
  color: #fff;
  display: grid;
  place-content: center;
  padding: 1rem;
  gap: 1rem;
}

.device-iphone-x {
  height: min(100vh - 2rem, 100vh);
  min-height: 540px;
}

.device-iphone-x .device-frame,
.device-iphone-x .device-content {
  height: 100%;
}

.device-iphone-x .device-content {
  overflow: hidden auto;
}

.container {
  padding: 3rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

figure,
figcaption {
  margin: 0;
  padding: 0;
}

figure {
  width: 100%;
  padding: 1rem;
  border: 1px solid rgb(0 0 0 / 0.125);
  box-shadow: 0 0 1px 1px rgb(0 0 0 / 0.025);
  background-color: #fff;
  color: #444;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
}

figcaption {
  font-size: clamp(1rem, 1vw + 1.125rem, 1.5rem);
  margin-bottom: 0.25em;
  text-shadow: 1px 1px 1px rgb(220 220 220 / 0.12);
}

figure img {
  border-radius: 10px;
  border: 1px solid rgb(0 0 0 / 0.125);
  box-shadow: 0 0 1px 1px rgb(0 0 0 / 0.025);
  aspect-ratio: 4 / 1;
}

figure .box {
  aspect-ratio: 4 / 1;
  background: rgb(145 39 39 / 50%);
  border-radius: 10px;
  border: 1px solid rgb(0 0 0 / 0.125);
  box-shadow: 0 0 1px 1px rgb(0 0 0 / 0.025);
}

:root {
  --white: #ffffff;
  --light: #f0eff3;
  --black: #000000;
  --dark-blue: #1f2029;
  --dark-light: #353746;
  --red: #3c0076;
  --yellow: #a500ff;
  --grey: #ecedf3;
  --width: 386px;
}

#switch--wrapper {
  position: absolute;
  left: 50%;
  white-space: nowrap;
  transform: translate3d(-50%, 0, 0);
  z-index: 999;
  bottom: 2rem;
  text-align: center;
}

#switch--wrapper span {
  margin-top: 1rem;
  color: #444;
}
[type="checkbox"]:checked,
[type="checkbox"]:not(:checked) {
  position: absolute;
  left: -9999px;
  width: 0;
  height: 0;
  visibility: hidden;
}
[type="checkbox"]:checked + label,
[type="checkbox"]:not(:checked) + label {
  position: relative;
  width: 70px;
  display: inline-block;
  padding: 0;
  text-align: center;
  height: 6px;
  border-radius: 4px;
  background-image: linear-gradient(298deg, var(--red), var(--yellow));
  z-index: 100 !important;
}
[type="checkbox"]:checked + label:before,
[type="checkbox"]:not(:checked) + label:before {
  position: absolute;
  font-weight: 900;
  cursor: pointer;
  top: -17px;
  z-index: 2;
  font-size: 14px;
  line-height: 40px;
  text-align: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: all 300ms linear;
}
[type="checkbox"]:not(:checked) + label:before {
  content: "Off";
  left: 0;
  color: var(--grey);
  background-color: var(--dark-light);
  box-shadow: 0 4px 4px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(26, 53, 71, 0.07);
}
[type="checkbox"]:checked + label:before {
  content: "On";
  left: 30px;
  color: var(--yellow);
  background-color: var(--dark-blue);
  box-shadow: 0 4px 4px rgba(26, 53, 71, 0.25), 0 0 0 1px rgba(26, 53, 71, 0.07);
}

figure img,
figure .box {
  transition: all 0.2s ease-in;
  width: var(--width);
}

const checkedEle = document.querySelector("#switch--wrapper");
const rootEle = document.documentElement;

checkedEle.addEventListener("change", (e) => {
  if (e.target.checked) {
    rootEle.style.setProperty("--width", "min(100%, 386px)");
  } else {
    rootEle.style.setProperty("--width", "386px");
  }
});