body {
  font-family: Arial, sans-serif;
  line-height: 1.5;
  margin: 0;
  padding: 0;
}

header {
  background-color: #f2f2f2;
  padding: 20px;
  text-align: center;
}

nav {
  background-color: #333;
  color: #fff;
  text-align: center;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

nav ul li {
  display: inline-block;
  margin-right: 10px;
  padding: 10px;
}

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

section {
  padding: 20px;
}

section h2 {
  color: #333;
}
section h3 {
    color: #333;
  }

footer {
  background-color: #333;
  color: #fff;
  padding: 10px;
  text-align: center;
}
a {
  width: 25%;
  font-size:x-large;
}
nav {
  position: relative;;
}
#ff {
  margin: 15px;
  padding: 5px;
}