body {
  display:grid;
  justify-content:center;
  height:100vh;
  font-family:sans-serif;
  font-weight:900;
  color:darkred;
  background:linear-gradient(to bottom right,tomato,darkred);
  perspective:50vw;
  overflow:hidden;
}
div {
  position:relative;
  font-size:15vw;
  line-height:100vh;
  filter:drop-shadow(0 0 5px tomato);
  animation:spin 5s linear infinite;
}
div:before {
  content:'';
  width:15vw;
  height:25vw;
  background:red;
  position:absolute;
  left:50%;
  top:50%;
  border-radius:150px 150px 0 0;
  transform:translate(-74%, -50%) rotate(-45deg);
  z-index:-1;
}
div:after {
  content:'';
  width:15vw;
  height:25vw;
  background:red;
  position:absolute;
  left:50%;
  top:50%;
  border-radius:125px 125px 0 0;
  transform:translate(-26%, -50%) rotate(45deg);
  z-index:-1;
}
@keyframes spin {
  100% { transform:rotateY(360deg); }
}