<div class="container">
  <ul>
    <li>W3cplus.com (hover me)</li>
  </ul>
</div>

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

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

body {
  inline-size: 100vw;
  min-block-size: 100vh;

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: "Exo", Arial, sans-serif;
  background-color: #f7f7f7;
  line-height: 2;
}

.container {
  padding: 40px;
  background: #fff;
  box-sizing: border-box;
  box-shadow: 0 2px 4px rgb(0 0 0 / 20%);
  min-width: 40vw;
  max-width: 40vw;
  border-radius: 5px;
  position: relative;
}

.container::before,
li::marker {
  content: "⇴";
  font-size: 1.5rem;
}

.container::before {
  font-size: clamp(2rem, 20vw + 3rem, 4rem);
  position: absolute;
  top: -1.25em;
  left: -20px;
  transform: rotate(-90deg);
  color: #f36;
  filter: drop-shadow(1px 2px 3px rgb(0 0 0 / 0.5));
}

.container:hover::before,
.container:hover li::marker {
  content: normal;
}