* {
  margin: 0;
  padding: 0;
  border: none;
  font-family: Arial, sans-serif;
}

body {
  font-size: 14px;
  background-color: white;
}

.centered {
    position: fixed;
    top: 50%;
    left: 50%;
    /* bring your own prefixes */
    transform: translate(-50%, -50%);
  }