#logo{
	padding-left: 50px;
	padding-right: 50px;
	padding-top: 8px;
	height: 40px;
	width: 170px;
}

ul.topnav {
  	position: fixed;
	top:0px;
	left:0px;
	width: 100%;
	list-style-type: none;
	margin: 0;
	padding: 0;
	overflow: hidden;
	background-color: rgba(255,0,0,0.7);
}

ul.topnav li {
	float: left;
}

ul.topnav li a {
  display: inline-block;
  color: #f2f2f2;
  text-align: center;
  padding-left: 60px;
  padding-right: 60px;
  padding-top: 16px;
  padding-bottom: 16px;
  text-decoration: none;
  transition: 0.3s;
  font-size: 17px;
  font-family: Arial;
  font-weight: bold;
}

ul.topnav li a:hover {background-color: rgba(100,0,0,0.5);}

ul.topnav li.icon {display: none;}

.social{
	width: 20px;
	height: 30px;
}

#BACK{
	position: absolute;
	top: 8%;
	left: 10%;
	font-family: Arial;
	font-size: 17px;
	font-weight: bold;
	color: red;
}

#logoi{
	position: absolute;
	width: 80%;
	height: 30%;
	top: 15%;
	left: 10%;
	right: 10%;
	z-index: -1;
}

.link{
	width: 20%;
	height: 30%;
	float: left;
	opacity: 1;
	-webkit-transition: opacity 0.6s;
	transition: opacity 0.6s;
}
.link:hover{
	opacity: 0.3;
}

#footer{
	position: absolute;
	top: 65%;
	left: 0px;
	height: 40%;
	width: 100%;
	z-index: 0;
	background-color: black;
	color: white;
	font-family: Arial;
}

#part1{
	position: absolute;
	top: 15%;
	left: 5%;
}

#part2{
	position: absolute;
	top: 15%;
	right: 5%;
}

#part3{
	position: absolute;
	top: 80%;
	width: 100%;
	text-align: center;
}

@media screen and (max-width:1200px) {
  ul.topnav li:not(:first-child) {display: none;}
  ul.topnav li.icon {
    float: right;
    display: inline-block;
  }
}

@media screen and (max-width:1200px) {
  ul.topnav.responsive {position: absolute;}
  ul.topnav.responsive li.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  ul.topnav.responsive li {
    float: none;
    display: inline;
  }
  ul.topnav.responsive li a {
    display: block;
    text-align: left;
  }
  
  #logoi{top: 20%;}
}

@media screen and (max-width:680px) {
  ul.topnav li:not(:first-child) {display: none;}
  ul.topnav li.icon {
    float: right;
    display: inline-block;
  }
  #logoi{top: 20%;}
  
    #footer{
	  height: 60%;
  }
  
  #part1{
	 position: absolute;
	 top: 15%;
	 left: 0px;
	 right: 0px;
	 text-align: center;
  }
  
  #part2{
	  position: absolute;
	  top: 55%;
	  text-align: center;
	  left: 0px;
	  right: 0px;
  }
  #part3{top: 90%;}
}

@media screen and (max-width:680px) {
	ul.topnav.responsive {position: relative;}
  ul.topnav.responsive li.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  ul.topnav.responsive li {
    float: none;
    display: inline;
  }
  ul.topnav.responsive li a {
    display: block;
    text-align: left;
  }
  #logoi{top: 20%;}
  
  #footer{
	  height: 60%;
  }
  
  #part1{
	 position: absolute;
	 top: 15%;
	 left: 0px;
	 right: 0px;
	 text-align: center;
  }
  
  #part2{
	  position: absolute;
	  top: 55%;
	  text-align: center;
	  left: 0px;
	  right: 0px;
  }
  
  #part3{top: 90%;}
}