纯css画一颗心

 <div class="love"></div>

.love {
  position: relative;
  top: 30px;
  left: 50%;
  width: 30px;
  height: 30px;
  background-color: pink;
}

.love:before {
  content: "";
  position: absolute;
  top: -14px;
  left: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: blue;
}

.love:after {
  content: "";
  position: absolute;
  top: 0px;
  left: 14px;
  width: 30px;
  height: 30px;
  background-color: yellow;
  border-radius: 50%;
}

.love:before {
  background-color: pink;
}

.love:after {
  background-color: pink;
}

.love {
  position: relative;
  top: 30px;
  left: 50%;
  width: 30px;
  height: 30px;
  background-color: pink;
  transform: rotate(-45deg);
}