body{
    background-color: #ccc;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{
    text-decoration: none;   
}
ul{
    list-style-type: none;
}
.header{
    background-color: black;
    position: sticky;
    top: 0;
    width: 100%;
}
.nav a{
    color: white;
}
.logo{
    font-size: 60px;
    color: white;
    background-color: rgb(0, 87, 128);
    display: block;
}
.nav{
    width: 100%;
    position: relative;
    overflow: hidden;
    display: none;
    background-color: black;
}
.menu a{
    display: block;
    padding: 25px;
}
.menu  a:hover{
    background-color: rgb(128, 0, 0);
}
.icon{
    color: white;
    display: block;
    position: absolute;
    right: 0;
    top: 0;
    background-color: black;
    padding: 10px;
}
@media only screen and (min-width: 768px) {
    .menu li{
        display: inline-block;
    }
    .nav{
        position: fixed;
        display: inline-block;
    }
    .logo{
        display: inline-block;
    }
    .icon{
        display: none;
    }
}
img {
    vertical-align: middle;
  }
.container {
    position: relative;
  }
.mySlides {
    display: none;
  }
  
  /* Add a pointer when hovering over the thumbnail images */
  .cursor {
    cursor: pointer;
  }
  
  /* Next & previous buttons */
  .prev,
  .next {
    cursor: pointer;
    position: absolute;
    top: 40%;
    width: auto;
    padding: 16px;
    margin-top: -50px;
    color: white;
    font-weight: bold;
    font-size: 20px;
    border-radius: 0 3px 3px 0;
    user-select: none;
    -webkit-user-select: none;
  }
  
  /* Position the "next button" to the right */
  .next {
    right: 0;
    border-radius: 3px 0 0 3px;
  }
  
  /* On hover, add a black background color with a little bit see-through */
  .prev:hover,
  .next:hover {
    background-color: rgba(0, 0, 0, 0.8);
  }
  
  /* Number text (1/3 etc) */
  .numbertext {
    color: #f2f2f2;
    font-size: 12px;
    padding: 8px 12px;
    position: absolute;
    top: 0;
  }
  
  /* Container for image text */
  .caption-container {
    text-align: center;
    background-color: #222;
    padding: 2px 16px;
    color: white;
  }
  
  .row:after {
    content: "";
    display: table;
    clear: both;
  }
  
  /* Six columns side by side */
  .column {
    float: left;
    width: 16.66%;
  }
  
  /* Add a transparency effect for thumnbail images */
  .demo {
    opacity: 0.6;
  }
  
  .active,
  .demo:hover {
    opacity: 1;
  }