html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}

.logo {
  width: 300px;
  max-width: 60vw;
}

@media (max-width: 768px) {
  .logo {
    width: 200px;
  }
}