Vill meny på toppen står fast i mobil version, även man scrolla ner

li {
float: left;
border-right:0px solid #bbb;
}

li:last-child {
border-right: none;
}

li a {
display: block;
color: white;
text-align: center;
padding: 19px 16px;
text-decoration: none;
}

li a:hover:not(.active) {
background-color: #112;
}

.active {
background-color: #990000;
}

body {margin:0;}
ul.topnav {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
position: fixed;
top: 0;
width: 100%;
background-color: #333;
-webkit-transition: all 0.4s ease;
-moz-transition: all 0.4s ease;
transition: all 0.4s ease;
}

ul.topnav li {float: left;}

ul.topnav li a {
display: inline-block;
color: #FFF;
text-align: center;
padding: 14px 16px;
text-decoration: none;
transition: 0.3s;
font-size: 17px;
font-family: 'Dosis', sans-serif;
}

ul.topnav li a:hover {background-color: #990000;}

ul.topnav li active {
background-color: #990000;
}

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

@media screen and (max-width:680px) {
ul.topnav li:not(:first-child) {display: none;}
ul.topnav li.icon {
float: right;
display: inline-block;
}
}

@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;
}

function myFunction() {
var x = document.getElementById("myTopnav");
if (x.className === "topnav") {
x.className += " responsive";
} else {
x.className = "topnav";

}

function myFunction() {
var x = document.getElementById("myTopnav");
if (x.className === "topnav") {
x.className += " responsive";
} else {
x.className = "topnav";
}
}