body {
  margin: 0;
  padding: 0;
  background-color: #ffffff;
}

#logo {
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

img {
  width: 50%;
  height: auto;
}
footer {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  background-color: red;
  color: white;
  text-align: center;
}