style.css

.heart {
  background-color: crimson;
  display: inline-block;
  width: 200px;
  height: 200px;
  position: relative;
  top: 0;
  transform: rotate(-45deg);
  position: absolute;
  left: 45%; 
  top: 45%;
  animation: heartbeat 1.25s infinite;
}
.heart::before,
.heart::after {
  content: "";
  background-color: crimson;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  position: absolute;
  animation: pulsecolor 1.25s infinite;
}
.heart::before {
  top: -100px;
  left: 0;
}

.heart::after {
  top: 0;
  left: 100px;
}
.right-eye {
  position: absolute;
  height: 15px;
  width: 15px;
  z-index: 1;
  border-radius: 50%;
  background-color: #000000;
  right: 60px;
  top: -10x;
  animation: blink 1s infinite;
.right-eye::before {
  top: -50px;
  right: 0;
}
.right-eye::after {
  top: 0;
  right: 50px;
}
 span {
      position: absolute;
      transition: all 0.3s;
      width: 10px;
      height: 10px;
      margin-left: 5px;
      margin-top: 5px;
      background: #000;
      border-radius: 50%;
    }
}
.left-eye {
  position: absolute;
  height: 15px;
  width: 15px;
  z-index: 1;
  border-radius: 50%;
  background-color: #000000;
  left: 175px;
  bottom: 137px;
  animation: blink 1s infinite;
}
.left-eye::before {
  top: -50px;
  right: 0;
}
.left-eye::after {
  top: 0;
  right: 50px;
}
.mouth {
  position: absolute;
  height: 10px;
  width: 65px;
  border-radius: 50%;
  background-color: #000000; 
  align-item: center;
  bottom: 70%;
  left: 50%;
  z-index: 2;
  transform: rotate(45deg);
}
@keyframes heartbeat {
    0% {
    transform: scale(1)
               rotate(-45deg);
      }
    10% {
    transform: scale(1.25)
               rotate(-45deg);
    background-color: #ef3953;
      }
  100% {
      transform: scale(1)
                 rotate(-45deg);
  }
}

@keyframes pulsecolor {
  10% {
  background-color: #ef3953;
  }
}

@keyframes blink {
 0%, 100% {
        transform: scale(1, .05);
    }
    5%,
    95% {
        transform: scale(1, 1);
    }
}



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