.blob {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 300px;
  height: 300px;
  border-radius: 100%;
  background-image: linear-gradient(#7a1c20 10%, rgb(252, 213, 129));
  filter: blur(150px);
  transition: all 450ms ease-out;
  position: fixed;
  pointer-events: none;
  left: 0;
  top: 0;
  transform: translate(calc(-50% + 15px), -50%);
  z-index: -1;
}