.dot{
  width:35px;
  height:35px;
  position:absolute;
  background: url("/assets/img/rose-petals.png");
  backdrop-filter: contrast(2);
  background-size: 100% 100%;
  z-index: 1000;
}
html, body, #container {width:100%; height:100%; }
#logo{ left:50%; top:50%; position:absolute; border-radius:10px; }