:root {
  --page-width: 1920;
  --page-height: 1080;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #d9e8f4;
  font-family: Arial, Helvetica, sans-serif;
}

.site-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.page-wrap {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--page-width) * 1px);
  height: calc(var(--page-height) * 1px);
  transform-origin: center center;
  transform: translate(-50%, -50%) scale(1);
}

.page-frame {
  display: block;
  width: calc(var(--page-width) * 1px);
  height: calc(var(--page-height) * 1px);
  border: 0;
  background: #fff;
}