* {
  box-sizing: border-box;
}

.container {
  position: relative;
  width: 100%;
  height: 100%;
}

.container > * {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

:host {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
}