<div class="card">
  <div class="card__thumb">
    <img src="https://picsum.photos/966/358?random=1" width="966" height="358" alt="" />
  </div>
</div>

<div class="card">
  <div class="card__content">
    <h2>Card Title</h2>
    <p>Some des will go here and I need it to wrap into lines</p>
  </div>
</div>

<div class="card">
  <div class="card__content">
    <h2>Card Title</h2>
    <p>Some des will go here and I need it to wrap into lines</p>
  </div>
  <div class="card__thumb">
    <img src="https://picsum.photos/966/358?random=1" width="966" height="358" alt="" />
  </div>
</div>

<div class="form">
  <label for="glass-lightness">glass-lightness:</label>
  <input type="range" min="0" max="100" value="0" id="glass-lightness" />
</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;
  padding: 20px;

  display: grid;
  place-content: center;
  gap: 20px;
  grid-template-columns: repeat(3, 30vw);
}

.card {
  width: 30vw;
  background-color: #fff;
  border-radius: 5px;
  border: 1px solid #e8e0e0;
  box-shadow: 0 3px 10px 0 rgb(0 0 0 / 0.3);
  padding: 5px;
  display: grid;
}

img {
  max-width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  border-radius: 5px;
  vertical-align: top;
}
.card__content {
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 10px;
}

.card__thumb,
.card__content {
  grid-area: 1 / -1;
}

.card__content {
  z-index: 2;
}

.card:nth-child(2) {
  background: transparent;
}

:root {
  --glass-lightness: 0%;
}

.card__content {
  background: hsl(0 0% var(--glass-lightness) / 50%);
  backdrop-filter: blur(40px);
}

.form {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  color: #fff;
}

const lightness = document.getElementById("glass-lightness");
const root = document.documentElement;

lightness.addEventListener("change", (etv) => {
  root.style.setProperty("--glass-lightness", `${etv.target.value}%`);
});