<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.pghd{
height:48px;
background-color:goldenrod;
color:orchid;
position:fixed;
top:0;
right:8px;
left:8px;
}
.pgbd{
height:5000px;
background:darkgrey;
top:50px;
}
.pgbm{
height:48px;
background-color:goldenrod;
color:orchid;
position:fixed;
bottom:0;
right:8px;
left:8px;
}
</style>
</head>
<body>
<div class="pghd"> aaaa</div>
<div class="pgbd">jkfjfjkfj</div>
<div class="pgbm" style="bottom:0"> bbbbbbbbbbb</div>
</body>
</html>
