* { padding: 0; margin: 0; box-sizing: border-box; }
body, html { height: 100% }

.wrapper {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo {
  width: 50%;
  max-width: 100%;
}

@media (max-width: 768px) {
  .logo {
    width: 80%;
  }
}