html {
  --dotColor: white;
  --dotSize: 2px;
  
  height: 100svh;
  background-image: conic-gradient(from 0deg at var(--dotSize) var(--dotSize), transparent 75%, var(--dotColor) 75% 100%),
url('https://images.unsplash.com/photo-1518467166778-b88f373ffec7?crop=entropy&cs=srgb&fm=jpg&ixid=M3wzMjM4NDZ8MHwxfHJhbmRvbXx8fHx8fHx8fDE3Nzg2MDA4OTB8&ixlib=rb-4.1.0&q=85&=800');
  background-size: 20px 20px, cover;
  background-position: bottom right, center center;
}