<style>
      body {
        font-family: Arial, sans-serif;
        margin: 20px;
      }
      .container {
        max-width: 1200px;
        margin: 0 auto;
      }
      #igv-div {
        border: 1px solid #ccc;
        margin: 20px 0;
      }
      .description {
        background-color: #f8f9fa;
        padding: 15px;
        border-radius: 5px;
        margin-bottom: 20px;
      }
      .code-block {
        background-color: #f8f9fa;
        padding: 10px;
        border-radius: 5px;
        font