<div class="container">
  <ul>
    <li class="list-item">Unordered list item</li>
    <li class="list-item">Unordered list item</li>
    <li class="list-item">Unordered list item</li>
  </ul>
  <ol>
    <li class="list-item">Ordered list item</li>
    <li class="list-item">Ordered list item</li>
    <li class="list-item">Ordered list item</li>
  </ol>

  <div class="list">
    <div class="list-item">display list item</div>
    <div class="list-item">display list item</div>
    <div class="list-item">display list item</div>
  </div>
</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: 60vw;
  max-width: 60vw;
  border-radius: 5px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.list > .list-item {
  display: list-item;
}

ul ::marker,
ol ::marker {
  content: counter(list-item) "» ";
}

.list {
  counter-reset: order;
}

.list > .list-item {
  counter-increment: order;
}

.list ::marker {
  content: counter(order) "» ";
}