W3Schools Tryit Editor

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {margin:0;}

.navbar {
  overflow: hidden;
  background-color: #333;
  position: fixed;
  top: 0;
  width: 100%;
}

.navbar a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.navbar a:hover {
  background: #ddd;
  color: black;
}

.main {
  padding: 16px;
  margin-top: 30px;
  height: 1500px; /* Used in this example to enable scrolling */
}
</style>
</head>
<body>

<div class="navbar">
  <a href="#home">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
</div>

<div class="main">
  <h1>Fixed Top Menu</h1>
  <h2>Scroll this page to see the effect</h2>
  <h2>The navigation bar will stay at the top of the page while scrolling</h2>

</body>
</html>

​x
 
<!DOCTYPE html><html><head><meta name="viewport" content="width=device-width, initial-scale=1"><style>body {margin:0;}​.navbar {  overflow: hidden;  background-color: #333;  position: fixed;  top: 0;  width: 100%;}​.navbar a {  float: left;  display: block;  color: #f2f2f2;  text-align: center;  padding: 14px 16px;  text-decoration: none;  font-size: 17px;}​.navbar a:hover {  background: #ddd;  color: black;}​.main {  padding: 16px;  margin-top: 30px;  height: 1500px; /* Used in this example to enable scrolling */}</style></head><body>​<div class="navbar">  <a href="#home">Home</a>  <a href="#news">News</a>  <a href="#contact">Contact</a></div>​<div class="main">  <h1>Fixed Top Menu</h1>