SOURCE

<!-- One Heart -->
<!-- <div></div> -->

<h1>爱无处不在...</h1>
<div class="heart"></div>
<div class="heart"></div>
<div class="heart"></div>
<div class="heart"></div>
<div class="heart"></div>
<div class="heart"></div>
<div class="heart"></div>
<div class="heart"></div>

<!--  -->
<div class="heart-cell"></div>

/* div {
  position:relative;
  top: 100px;
  left: 50%;
  width: 100px;
  height: 100px;
  background-color: tomato;
  transform: rotate(-45deg);
}
div:before {
  content: "";
  position:absolute;
  top: -50px;
  left: 0;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: blue;
  background-color: tomato;
}
div:after{
  content: "";
  position: absolute;
  top: 0px;
  left: 50px;
  width: 100px;
  height: 100px;
  background-color: yellow;
  background-color: tomato;
  border-radius: 50%;
} */


.heart{
  position: relative;
  width: 100px;
  height: 90px;
  float: left;
}

.heart:before,
.heart:after{
  position: absolute;
  content: "";
  left: 50px;
  top: 0;
  width: 50px;
  height: 80px;
  background: #fc2e5a;
  border-radius: 50px 50px 0 0;
  transform-origin: 0 100%;
  transform: rotate(-45deg);
}
.heart:after{
  left: 0;
  transform-origin :100% 100%;
  transform: rotate(45deg);
}


.heart-cell {
  position: absolute;
  left: 20%;
  top: 90%;
  width: 105px;
  height: 105px;
  margin: -52.5px 0 0 -52.5px;
}

.heart-cell::before {
  content: '';
  display: block;
  transition: all 400ms;
  width: 15px;
  height: 15px;
  margin: -15px 0 0 -15px;
  box-shadow: 30px 15px #8e1a19, 45px 15px #ac0500, 75px 15px #f73f0c, 90px 15px #fa5f27, 15px 30px #740100, 30px 30px #8e0500, 45px 30px #8e1918, 60px 30px #ca1300, 75px 30px #f34f2b, 90px 30px #df351f, 105px 30px #f77c2a, 15px 45px #4b0000, 30px 45px #690100, 45px 45px #8e0f0b, 60px 45px #bf1000, 75px 45px #f84010, 90px 45px #f04222, 105px 45px #fa5724, 15px 60px #451312, 30px 60px #5a0100, 45px 60px #840e0c, 60px 60px #a51d1a, 75px 60px #ed2805, 90px 60px #d9321e, 105px 60px #f44622, 30px 75px #3b0000, 45px 75px #5d1a1b, 60px 75px #8e1a19, 75px 75px #a80700, 90px 75px #b90a00, 45px 90px #3d0000, 60px 90px #551415, 75px 90px #670100, 60px 105px #340000;
  animation: pulse 1.2s steps(1) infinite;
}