body {
  background-color: #000;
  color: #fefefe;
}

.logo {
  width: 50vw;
  height: 50vh;
  left: 50vw;
  top: 50vh;
  transform: translate(-50%, -50%);
  position: absolute;
  background-image: url("https://assertive.dev/images/logo.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}