html, body, .root {
  width: 100%;
  height: 100%;
}
.root {
  align-items: center;
  display: flex;
  justify-content: center;
}
.under_construction {
  height: 500px;
  width: 500px;
}
@media (max-width: 600px) {
  .under_construction {
    height: 400px;
    width: 400px;
  }
}
@media (max-width: 450px) {
  .under_construction {
    height: 350px;
    width: 350px;
  }
}
@media (max-width: 400px) {
  .under_construction {
    height: 250px;
    width: 250px;
  }
}