html, body {
  margin: 0px;
}
body {
  background: #2c1d5b;
}
.logo {
  position: fixed;
  top: 0px;
  right: 0;
  bottom: 0;
  left: 0;  
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo video,
.logo img {
  width: 100%;
}