*{
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
  }
  .header{
    min-height: 100vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7), rgba(4,9,30,0.7)), url(Images/banner.jpg);
    background-position: center;
    background-size: cover;
    position: relative;
  }
  nav{
    display: flex;
    padding: 2% 6%;
    justify-content: space-between;
    align-items: center;
  }
  nav img{
    width: 279px;
  }
  .nav-links{
    flex: 1;
    text-align: right;
  }
  .nav-links ul li{
    list-style: none;
    display: inline-block;
    padding: 8px 12px;
    position: relative;
  }
  .nav-links ul li a{
    color: #fff;
    text-decoration: none;
    font-size: 13px;
  }
  .nav-links ul li::after{
    content: '';
    width: 0%;
    height: 2px;
    background: #f44336;
    display: block;
    margin: auto;
    transition: 0.5s;
  }
  .nav-links ul li:hover::after{
    width: 100%;
  }
  .text-box{
    width: 90%;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
  }
  .text-box h1{
    font-size: 62px;
  }
  .text-box p{
    margin: 10px 0 40px;
    font-size: 14px;
    color: #fff;
  }
  .hero-btn{
    display: inline-block;
    text-decoration: none;
    color: #fff;
    border: 1px solid #fff;
    padding: 12px 34px;
    font-size: 13px;
    background: transparent;
    position: relative;
    cursor: pointer;
  }
  .hero-btn:hover{
    border: 1px solid #f44336;
    background: #f44336;
    transition: 1s;
  }
  nav .fas{
    display: none;
  }
  
  @media(max-width: 700px){
    .text-box h1{
      font-size: 20px;
    }
    .nav-links ul li{
      display: block;
    }
    .nav-links{
      position: fixed;
      background: #f44336;
      height: 100vh;
      width: 200px;
      top: 0;
      right: -200px;
      text-align: left;
      z-index: 2;
      transition: 1s;
    }
    nav .fas{
      display: block;
      color: #fff;
      margin: 10px;
      font-size: 22px;
      cursor: pointer;
    }
    .nav-links ul{
      padding: 30px;
    }
  }

/*  -------  footer  ------- */

  .footer{
    width: 100%;
    text-align: center;
    padding: 30px 0;
 }
 
 .footer h4{
   margin-bottom: 25px;
   margin-top: 20px;
   font-weight: 600;
 }
 .icons .fab{
   color: #f44336;
   margin: 0 13px;
   cursor: pointer;
   padding: 18px;
 }



 .sub-header{
    height: 50vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7), rgba(4,9,30,0.7)), url(Images/banner2.jpg);
    background-position: center bottom;
    background-size: cover;
    text-align: center;
    color: #fff;
  }
  
  .sub-header h1{
    margin-top: 100px;
  }

  .container{
    margin-top: 0px;
    padding-bottom: 30px;
    background-color: #fff3f3;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px; 
  }
  #prvi, #prvi .row > div{
    margin-top: 50px;
  }
  .red-btn{
    border: 1px solid #f44336;
    background: transparent;
    color: #f44336;
  }
  .red-btn:hover{
    color: #fff;
    text-decoration: none;
  }

  .sub-header h1{
      font-size: 36px;
      font-weight: 600;
  }