body {
      margin: 0;
      font-family: Arial, sans-serif;
      background-color: #f9f9f9;
      color: #333;
    }
    body::-webkit-scrollbar{
        display: none;
    }
    header {
      background: #006d77;
      color: white;
      padding: 15px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    header .logo {
      font-size: 1.5em;
      font-weight: bold;
    }
    nav a {
      color: white;
      margin-left: 20px;
      text-decoration: none;
      font-weight: bold;
    }
    .hero {
      background: #83c5be;
      color: white;
      text-align: left;
      padding: 80px 20px;
    }
    .hero h1 {
      font-size: 20px;
      margin-bottom: 10px;
    }
    .hero p {
      font-size: 1em;
    }
    .content {
      padding: 40px 20px;
      max-width: 900px;
      margin: auto;
      text-align: center;
    }
    .content h2 {
      color: #006d77;
    }
    /* main */
    .main{
        background-color: aliceblue;
        padding: 30px 20px;
        border-top: 3px solid  green;
        border-radius: 10px 0 10px 0;
    }

    /* footer */
    footer {
      background: #333;
      color: white;
      padding: 30px 30px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
    }
    footer div {
      margin: 10px 0;
    }
    footer a {
      color: #83c5be;
      text-decoration: none;
      margin-right: 15px;
    }