fix a navbar to top of page js
/* The navigation bar */.navbar { overflow: hidden;
background-color: #333; position: fixed; /* Set
the navbar to fixed position */ top: 0;
/* Position the navbar at the top of the page */ width:
100%; /* Full width */}/* Links inside the navbar */
.navbar a { float: left; display:
block; color: #f2f2f2; text-align:
center; padding: 14px 16px;
text-decoration: none;}/* Change background on mouse-over */.navbar
a:hover { background: #ddd; color:
black;}/* Main
content */.main { margin-top: 30px; /* Add a top
margin to avoid content overlay */}