@import url('https://fonts.googleapis.com/css2?family=Muli&display=swap');

* {
  box-sizing: border-box;
}

body {
  display: grid;
  place-content: center;
  min-height: 100vh;
  margin: 0;
  font-family: Muli, sans-serif;
  background-color: #e1e1e1;
}

.key {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  min-width: 150px;
  margin: 10px;
  padding: 20px;
  font-size: 20px;
  font-weight: bold;
  border: 1px solid #999;
  background-color: #eee;
  box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
  small {
    position: absolute;
    top: -24px;
    color: #555;
    font-size: 14px;
  }
}