*{
  margin: 0;
  padding: 0;
  font-family: 'PT Sans', sans-serif;
}

html{
  scroll-behavior: smooth;
}

.header {
  min-height: 100vh;
  width: 100%;
  background-image: linear-gradient(
    rgba(80,94,99,0.8),
    rgba(0,0,0,0.83)),
    url("../images/NAU_biketrail.jpg");
  background-position: center;
  background-size: cover;
  position: relative;
}


        /*  Navigation  */

nav{
  display: flex;
  padding: 0.5% 6%;
  justify-content: space-between;
  align-items: center;
  background-color: #000000a3;
  border: 1px ridge black;
}

  nav img{
    width: 160px;
    border: 2px solid #e1e1e1;
  }

  .nav-links{
    flex: 1;
    text-align: right;
  }

    .nav-links ul li{
      list-style: none;
      display: inline-block;
      padding: 0px 45px;
      position: relative;
    }

    .nav-links ul li a{
      color: #fff;
      text-decoration: none;
      font-size: 24px;
    }

    .nav-links ul li::after{
      content: '';
      width: 0%;
      height: 2px;
      background: #ffff;
      display: block;
      margin: auto;
      transition: 0.5s;
    }

    .nav-links ul li:hover::after{
      width: 100%;
    }




            /*  Introduction  */


.text-box{
  width: 75%;
  color: #fff;
  position: absolute;
  top: 60%;
  left: 50%;
  transform: translate(-50%,-50%);
  text-align: center;
}

  .text-box h1{
    font-size: 56px;
  }

  .text-box p{
    margin: 10px 0 40px;
    font-size: 18px;
    text-shadow: -0.5px 0 black, 0 .5px black, .5px 0 black, 0 -.8x black;
    color: #fff;
    line-height: 165%;
  }


          /*----- Description -----*/

.desc{
  width: 80%;
  margin: 10% auto;
  padding-top: 0;
}

  .desc h1{
    font-size: 36px;
    font-weight: 550;
    line-height: 175%;
    text-align: center;
  }

  .desc p{
    font-size: 18px;
    font-weight: 300;
    line-height: 37px;
    text-align: center;
    width: 80%;
    margin: 5% auto;
    padding: 10px;
  }


        /*----- Clients -----*/

.clientsHeader{
  font-size: 185%;
  font-weight: 515;
  line-height: 100%;
  margin: auto auto auto auto;
  text-align: center;
}

.clients-list {
  margin: 5% auto;
  text-align: center;
  max-width: 100%;
  width: 70%;
  padding: 0;
}

  .clients-list li{
    display: inline-grid;
    width: 280px;
    margin: 0 90px 30px;
    justify-items: center;
  }

  .clients-list li > a{
    display: block;
    text-decoration: none;
    background-size: cover;
    background-repeat: no-repeat;
    height: 300px;
    width: 250px;
    margin: 0;
    padding: 0;
    border: 4px solid #ffffff;
    outline: 1px solid #d0d0d0;
    box-shadow: 0 2px 1px #DDD;
    transition: .25s;
    border-radius: 30%;
  }

  .clients-list li > a:hover{
    transform: scale(1.1);
    transition: .25s;
  }

  .clients-list .clients-details{
    margin-top: 25px;
  }

  .clients-list .clients-details h3 {
    display: block;
    font-size: 100%;
    margin: 0 0 20px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .clients-list .clients-details h3 a {
    color: #303030;
    text-decoration: none;
  }

  .clients-list img {
    border-radius: 30%;
  }

  .clients-list .clients-details .clients-disc{
    display: block;
    color: #717171;
    font-size: 80%;
    font-weight: normal;
    margin: 0;
  }



.divider{
  margin: 7% auto 7% auto;
  width: 70%;
}



          /*----- Requirements -----*/

.reqs{
  margin: 90px;

}

.reqs1{
  position: relative;
  top: 60px;
  left: 30px;
  width: 75%;
}
.reqs2{
  position: relative;
  top: 60px;
  left: 61px;
  width: 67%;
}

.reqs h1{
  font-size: 36px;
  font-weight: 550;
  line-height: 175%;
  text-align: center;
}

.schem{
  margin: 90px 90px 200px 90px;;
}
  .schem h1{
    font-size: 36px;
    font-weight: 550;
    line-height: 175%;
    text-align: center;
  }
  .schem img{
    position: relative;
    top: 60px;
    left: 150px;
    width: 70%;
    border: 3px solid;
    border-color: rgba(0,0,0,.6);
  }
  .schem p{
    font-size: 18px;
    font-weight: 300;
    line-height: 37px;
    text-align: center;
    width: 80%;
    margin: 5% auto;
    padding: 10px;
  }




.hardware{
  line-height: 100%;
  margin: auto auto auto auto;
  text-align: center;
}

.hardware-list {
  margin: 5% auto;
  text-align: center;
  max-width: 100%;
  width: 100%;
  padding: 0;
}

  .hardware-list li{
    display: inline-grid;
    width: 200px;
    margin: 0 90px 30px;
    justify-items: center;
  }

  .hardware-list li > a{
    display: block;
    text-decoration: none;
    background-size: cover;
    background-repeat: no-repeat;
    height: 275px;
    width: 275px;
    margin: 0;
    padding: 0;
    border: 4px solid #ffffff;
    outline: 1px solid #d0d0d0;
    box-shadow: 0 2px 1px #DDD;
    transition: .25s;
    border-radius: 30%;
  }

  .hardware-list li > a:hover{
    transform: scale(1.1);
    transition: .25s;
  }

  .hardware-list .hardware-details{
    margin-top: 25px;
  }

  .hardware-list .hardware-details h3 {
    display: block;
    font-size: 100%;
    margin: 0 0 20px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .hardware-list .hardware-details h3 a {
    color: #303030;
    text-decoration: none;
  }

  .hardware-list img {
    border-radius: 30%;
    max-width: 100%;
  }




          /*----- Footer -----*/
.footer{
  height: 130px;
  background: rgb(18,18,25);
  background: linear-gradient(90deg, rgba(18,18,25,1) 0%, rgba(19,32,42,1) 35%, rgba(4,58,69,1) 100%);
  }
.footer p{
  position: relative;
  top: 30px;
  font-size: 18px;
  color: #ffff;
  text-align: center;
  line-height: 180%;
  }

  .footer hr{
  border-style: 6px groove;
  color: grey;
  }




          /*----- Mobile -----*/
@media(max-width: 700px){
  .header{
    background-size: cover;
    }
  .text-box h1{
    font-size: 20px;
    }
  .text-box p{
    font-size: 9px;
    }
}