<div class="item"></div>
<div class="item"></div>
<div class="item"></div>

body {
  background: white;
  color: #323232;
  font-weight: 300;
  height: 100vh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: Helvetica neue, roboto;
}

img {
  width: 56px;
  height: 48px;
}

h1 {
  font-weight: 200;
  font-style: 26px;
  margin: 10px;
}

.item {
  width: 100px;
  height: 100px;
  background: orange;
  cursor: pointer;
  margin-right: 10px;
}

.active {
  background: red;
}

const items = document.querySelectorAll('.item');

items.forEach(item => {
  item.addEventListener('click', function() {
    items.forEach(elem => elem.classList.remove('active'));
    this.classList.add('active');
  });
});