body,
html {
  margin: 0;
  height: 100%;
  background: #ffffff;
  background-size: 100% 100%;
}

body {
  position: fixed;
  inset: 0px;
  overflow: hidden;
  padding: 0px;
  user-select: none;
  touch-action: none;
}

.center {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}