x-page {
  display: block;
  height: 100%;
  background-color: var(--theme-background-color);
}
x-page .page-content {
  padding: var(--theme-padding-md, 20px);
  background-color: var(--theme-background-color, #fff);
  min-height: 100%;
}
x-page .page-content > :first-child {
  margin-top: 0;
}