body {
  font-family: Arial, sans-serif;
  padding-bottom: 600px;
}
nav a {
  margin: 0 5px;
}
input, textarea, button {
  display: block;
  width: 100%;
  margin: 10px 0;
}
button {
  padding: 10px;
  background: #444;
  color: white;
  border: none;
  cursor: pointer;
}
button:hover {
  background: #666;
}
footer {
  position: fixed;
  width: 100%;
  bottom: 0;
  padding: 6px;
  padding-top:10px;
  padding-bottom:0;
  line-height:1;
}