   background-color: #00bfff;
      color: white;
      border: none;
      padding: 15px;
      border-radius: 50%;
    }

    #scrollTopBtn:hover {
      background-color: #555;
    }
  </style>
</head>

<body>
  <div class="circle-container">
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="ci