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

<form>
  <div class="controle">
    <label for="size">--size:</label>
    <input type="range" min="1" max="5" step="1" value="1" name="size" id="size" />
    <output id="output--size">1</output>
  </div>
</form>

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

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

body {
  margin: 0px;
  padding: 10px;
  width: 100vw;
  min-height: 100vh;
  font-family: "Exo", Arial, sans-serif;
  background-color: #112211;

  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  background-color: #ff5722;
  padding: 3px;
  border-radius: 50%;
  position: relative;
  transition: all 0.28s ease;

  --size: 1;
  width: calc(var(--size) * 60px);
  height: calc(var(--size) * 60px); /* 或aspect-ratio: 1/1 */
}

.avatar img {
  display: block;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

form {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.65);
  font-size: 1.2rem;

  display: flex;
  justify-content: center;
  align-items: center;
  padding: 5vh;
  gap: 10px;
  color: #fff;
}

.controle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

const rangeEle = document.getElementById("size");
const outputEle = document.getElementById("output--size");
const avatar = document.querySelector(".avatar");

rangeEle.addEventListener("input", (evt) => {
  avatar.style.setProperty("--size", evt.target.value);
  outputEle.innerText = evt.target.value;
});