body{
	/*background-image: url("../obrazky/pozadie.jpg");*/
	background-image: linear-gradient(to bottom right, darkred, orange);
    background-repeat: no-repeat;
    background-size: cover;
	height: 100%; 
	margin: 0 auto;
}

.kontajner{
	color:white;
	font-family:Calibri;
}

.menu_box{
  width:60%;
  margin-left:20%;
  margin-right:20%;
}

/*div.gallery {
  border: 1px solid #ccc;
}

div.gallery:hover {
  border: 1px solid #777;
}*/

div.gallery img {
  width: 100%;
  height: auto;
}

div.desc {
  padding-top:20px;
  text-align: center;
  color:white;
  font-family:Calibri;
  font-size:14px;
  height:50px;
}

.responsive:hover{
	font-weight:bold;
	background-color: rgba(201, 76, 76, 0.3);
}

* {
  box-sizing: border-box;
}

.responsive {
  padding:30px;
  float: left;
  width: 19.999%;
}

@media only screen and (max-width: 1000px) {
  .responsive {
    width: 33.3333%;
    margin: 6px 0;
  }
}

@media only screen and (max-width: 700px) {
  .responsive {
    width: 49.99999%;
    margin: 6px 0;
  }
}

@media only screen and (max-width: 500px) {
  .responsive {
    width: 100%;
  }
}

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

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: rgba(0, 0, 0, 0.5);
  font-family:Calibri;
  position:fixed;
  width:100%;
}

li {
  float: left;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover:not(.active) {
  background-color: #111;
}

.active {
  background-color: rgba(255, 60, 0, 0.5);
}

.active:hover {
  background-color: rgba(255, 0, 0, 0.7);
}

.footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  height:20px;
  background-color: rgba(0, 0, 0, 0.5);
  text-align:center;
  font-family:Calibri;
  color:white;
}

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