nav .navbar .links li:first-child a {
    color: #000000;
  }
  nav .navbar .links li:nth-child(4) a {
    color: #0f82ee;
  }

  .book-service{
    display: none;
  }
  

  .sec1a{
    max-width: 1800px;
    margin: auto;
    padding: 20px;
  }

  
  .sec1a h1{
    text-align: center;
    width: 100%;
    font-size: 35px;
  }
  
  .sec1a .sec1a-container{
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    margin-bottom: 30px;
  }

  .sec1a .sec1a-container img{
    width: 30%;
    margin-top: 30px;
  }

  @media screen and (max-width: 900px) {
    .sec1a .sec1a-container img{
        width: 45%;
        margin-top: 15px;
    }

}