html,
body {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background-color: #fff;
  background: radial-gradient(
    circle,
    rgba(222, 234, 237, 0.3) 0%,
    rgba(86, 150, 167, 0.4) 100%
  );
}