<meta charset="utf-8">

<meta name="viewport" content="width=device-width, initial-scale=1.0">

<style>

body{

  background:linear-gradient(#151A79,#0D739E) no-repeat;
background-size:cover;
  transition:0.6s;
  background-color:#0D739E

}

  .earth{

    height:300px;

    width:300px;

    border-radius:100%;

    background:radial-gradient(circle at 35% 30%,white,#18B3B9C7);

    position: absolute;

    top:8rem;

    left:2rem;

    z-index:-4;

  }

  .tc1,.tc2,.tc3{

    height:5em;

    width:5em;

    background:#5D9B28;

   border-radius:100%;

   position: absolute;

   box-shadow:0 0 14px #DCFF03;

   animation:3s glow infinite;

  }

  .tc1{

    top:200px;

    left:120px;

  }

  .tc2{

    top:200px;

    left:170px;

  }

  .tc3{

    top:150px;

    left:140px;

  }

  .stem{

    width:20px;

    height:75px;

    background:#5C362D;

    position: absolute;

    top:250px;

    left:170px;

    z-index:-2;

  }

  @keyframes glow{

    from{

      box-shadow:0 0 10px #DCFF03;

    }

    to{

      box-shadow:0 0 2000px #DCFF03;

    }

  }

  </style>

<body>

  <header>

    <h2 style="color:white;font-family:Brush Script MT,cursive;">WISHING YOU A VERY HAPPY EARTH DAY 🌍</h2>

    <small style="color:white;font-family:monospace">“Plants are the heart of the Earth; save them to save the planet.”</small>

  </header>

  <div class="container">

    <div class="main">

      <div class="tree1">

        <div class="tc1"></div>

        <div class="tc2"></div>

        <div class="tc3"></div>

        <div class="stem"></div>

        <div class="earth">

        </div>

      </div>

            

  </div>

</body>

External CSS

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External JavaScript

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