<! DOCTYPE htm>
<html>
  <head>
    <title> FOR MY SISTER</title>
    <link rel=" stylesheet" type="text/css" href="style.css">
  </head>
  <body>
    <script src="./js"></script>
    <div class="heart"></div>
    
  </body>
</html>
body{
  magrin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0b1522;
  
}
.heart{
 height: 70px;
 width: 70px;
  background: #7FFFD4;
  position: relative;
  transform: rotate(-45deg);
  box-shadow: -10px 10px 90px #7FFFD4;
  animation: heart 0.6s linear infinite;
}
@keyframes heart{
  0%{
    transform: rotate(-45deg) scale(1.07);
  }
  80{
    transform: rotate(-45deg) scale(1.0);
  }
  100%{
    transform: rotate(-45deg) scale(0.8);
  }
}
.heart:before{
  content: '';
  position: absolute;
  height: 70px;
 width: 70px;
  background: #7FFFD4;
  top:-50%;
  border-radius: 50px;
  box-shadow: -10px -10px 90px #7FFFD4;
}
.heart:after{
  content: '';
  position: absolute;
  height: 70px;
 width: 70px;
  background: #7FFFD4;
  right:-50%;
  border-radius: 50px;
 box-shadow: 10px 10px 90px #7FFFD4; 
  }

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.