* {
padding: 0;
margin: 0;
box-sizing: border-box;
}

body {
    background: rgb(168, 168, 232);
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

#heart {
    position: relative;
    width: 100px;
    height: 90px;
    transition: all 0.4s ease-in;
  }

  #heart:before,
  #heart:after {
    position: absolute;
    content: "";
    left: 50px;
    top: 0;
    width: 50px;
    height: 80px;
    background: rgb(254, 168, 250);
    border-radius: 50px 50px 0 0;
    transform: rotate(-45deg);
    transform-origin: 0 100%;
  }
  #heart:after {
    left: 0;
    transform: rotate(45deg);
    transform-origin: 100% 100%;
  }

  #heart.change-me {
    border-color: pink;
  }

  #heart.change.me::before {
    border-color: transparent transparent red;
  }