body {
  --bg: #ace;
  --mug: #eee;
  --mug-light: #fff;
  --mug-dark: #ddd;
  --drink: #630;
  position: absolute;
  display: block;
  box-sizing: border-box;
  width: 25vmin;
  height: 32.5vmin;
  top: 55%;
  left: 30%;
  transform: translate(-50%, -50%);
  border-radius: 100% 80% 90% 100%;
  box-shadow: 
    inset 0 0 0 5vmin var(--mug),
    inset -2vmin 5.25vmin var(--mug-dark),
    0 0 0 100vmax var(--bg),
    inset 0 0 0 24vmin var(--bg);
}

body::before {
  content: "";
  display: block;
  position: absolute;
  box-sizing: border-box;
  abackground: var(--drink);
  width: 200%;
  height: 200%;
  border-radius: 100% / 15%;
  top: -42.5%;
  left: 74%;
  box-shadow: 
    inset 0 -56vmin var(--mug),
    inset 0 0.5vmin var(--mug-light),
    inset 0 -56.5vmin var(--mug-light),
    inset 0 6.5vmin var(--mug-dark),
    inset 0 -60vmin var(--drink),
    -22.5vmin -2vmin 4vmin -22vmin var(--bg);
}

@keyframes moveshadow {
  0%, 100% {
    top: -105%;
    background: #fff5;
    box-shadow: 3vmin 0 0 -3vmin #fff7;
  }
  50% {
    top: -110%;
    background: #fff4;
    box-shadow: 3vmin 0 0 -1.5vmin #fff7;
  }
}

body::after {
  content: "";
  position: absolute;
  display: block;
  box-sizing: border-box;
  width: 25%;
  height: 82%;
  background: #fff5;
  left: 160%;
  top: -105%;
  filter: blur(2vmin);
  border-radius: 100% 100% 0 0;
  box-shadow: 3vmin 0 0 -3vmin #fff7;
  animation: moveshadow 2s infinite;
}