*{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
  }
  
  body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    overflow: hidden;
  }
  
  .banner {
    width: 100%;
    background-image: linear-gradient(rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.75)), url(FixingAirCondition.jpg);
    background-size: cover;
    background-position: center;
  }
  
  .navbar {
    width: 85%;
    margin: auto;
    padding: 35px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .logo {
    width: 250px;
    cursor: pointer;
    text-transform: uppercase;
    color: #fff;
  }
  
  .navbar ul li {
    list-style: none;
    display: inline-block;
    margin: 0 20px;
    position: relative;
    text-transform: uppercase;
  }
  
  .navbar ul li a {
    text-decoration: none;
    color: #fff;
    font-size: 20px;
    text-transform: uppercase;
  }
  
  .navbar ul li::after {
    content: '';
    height: 3px;
    width: 0;
    background: #003e8f;
    position: absolute;
    left: 0;
    bottom: -10px;
    transition: 0.65s;
  }
  
  .navbar ul li:hover::after {
    width: 100%;
  }
  
  main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100vh - 140px);
  }
  
  h1 {
    font-size: 60px;
    color: #fff;
    margin-top: auto;
    margin-bottom: 10px;
    text-align: center;
  }
  
  .contact-info {
    text-align: center;
    color: #fff;
  }
  
  .contact-info h2 {
    font-size: 35px;
    margin-bottom: 10px;
  }
  
  .contact-info p {
    font-size: 25px;
    margin-bottom: 5px;
  }
  
  footer {
    color: #fff;
    text-align: center;
    padding: 10px;
    background-color: linear-gradient(rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.75));
  }