body {
  font-family: Arial, sans-serif;
  background-image: url(bgindx.jpg);
  background-position: center;
  background-attachment: scroll;
  background-size: auto;
  height: 100%;
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 20px 0;
}

nav ul {
  list-style-type: none;
  padding: 0;
  text-align: center;
}

nav ul li {
  display: inline;
  margin-right: 20px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
}

.container {
  max-width: 800px;
  margin: 280px auto;
  text-align: center;
}

.button-group {
  margin-top: 20px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: #333;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  margin-right: 10px;
}

.btn:hover {
  background-color: #555;
}

footer {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 10px 0;
  position: fixed;
  bottom: 0;
  width: 100%;
}