*{
	margin: 0;
	padding: 0;

}
html, body{
	height: 100%;
	font-family: sans-serif;
}

.header_top{
	background: #00795f;
	padding: 20px 0;
	text-align: center;
	color: white;
}

.container{
	margin: 0 auto;
}

.header_bottom{
	background: #2196F3;
	padding: 5px 0;
}


main{
	height: 100vh;
}

.clearfix:after{
	display: block;
	content: " ";
	clear: both;
}

.w3-border {
	display: block;
	margin-left: auto;
	margin-right: auto;
	margin-top: 10px;
	padding: 5px;
	width: 50%;
  }

nav ul {
	background-color:#2196F3;
	display:flex;
	flex-direction:column;
  }
  nav ul li{
	list-style-type: none;
  }
  nav ul li a{
	padding:.8rem 1rem;
	display:block;
	text-decoration: none;
	color: black;
  }
  nav ul li:hover{
	background:rgba(0,0,0, .25);
  }
  
  .arrow{
	font-family:FontAwesome;
	float:right;
  }
  .arrow-down::after{
	content:"\f107";
  }
  .arrow-right::after{
	content:"\f105";
  }
  
  
  @media only screen and (max-width:1024px) {
	.has-children ul li a{
	  padding-left:2rem;
	}
	
	.has-children ul .has-children ul a{
	  padding-left:3rem;
	}
	.arrow-down::after{
	  content:"\f107";
	}
  }
  
  @media only screen and (min-width:1024px) {

	nav ul{
	  flex-direction:row;
  /*     justify-content:flex-end; */
	}
	nav ul li{
	  position:relative;
	  flex:1 0 auto;
	  text-align:left;
	}
	.has-children ul, .has-children ul .has-children ul, .has-children ul .has-children ul .has-children ul{
	  display:none;
	  width:100%;
	  position:absolute;
	}
	.has-children ul .has-children ul{
	  left:100%;
	  top:0;
	}
	nav ul li:hover ul,  .has-children ul .has-children:hover ul, .has-children ul .has-children ul .has-children:hover ul{
	   display:flex;
	  flex-direction:column;
	}
	
  }


  .row > .column {
    padding: 0 8px;
  }
  
  .row:after {
    content: "";
    display: table;
    clear: both;
  }
  
  .column {
    float: left;
    width: 25%;
  }
  
  /* The Modal (background) */
  .modal {
    display: none;
    position: fixed;
    z-index: 1;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: black;
  }
  
  /* Modal Content */
  .modal-content {
    position: relative;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    width: 90%;
    max-width: 1200px;
  }
  
  /* The Close Button */
  .close {
    color: white;
    position: absolute;
    top: 10px;
    right: 25px;
    font-size: 35px;
    font-weight: bold;
  }
  
  .close:hover,
  .close:focus {
    color: #999;
    text-decoration: none;
    cursor: pointer;
  }
  
  .mySlides {
    display: none;
  }
  
  .cursor {
    cursor: pointer
  }
  
  /* Next & previous buttons */
  .prev,
  .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -50px;
    color: white;
    font-weight: bold;
    font-size: 20px;
    transition: 0.6s ease;
    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;
  }
    
  img {
    margin-bottom: -4px;
    image-orientation: from-image;
  }
  
  .caption-container {
    text-align: center;
    background-color: black;
    padding: 2px 16px;
    color: white;
  }
  
  .demo {
    opacity: 0.6;
  }
  
  .active,
  .demo:hover {
    opacity: 1;
  }
  
  img.hover-shadow {
    transition: 0.3s
  }
  
  .hover-shadow:hover {
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19)
  }


@media (max-width:800px) {
	.left, .main, .right {
	  width:100%;/*The width is 100%, when the viewport is 800px or smaller*/
	}
  }


.footer{
	background: #00795f;
	padding:20px 0;
	margin-top: 100px;
	text-align: center;
	clear: both;
	color: #ffff;
}