body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
}

header {
  text-align: center;
  padding: 20px 0;
  background-color: #f7f7f7;
  border-bottom: 1px solid gray;
}

#logo {
  width: 50%;
  height: auto;
  margin:20px;
  margin-top:10%;
}

nav {
  text-align: center;
  background-color: #fff;
  color: #fff;
  padding:10px;
  margin-top:10px;
}

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

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

nav a {
  text-decoration: none;
  color: #000;
  font-size: 14px;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

main {
  text-align: center;
  padding: 60px 0;
}

h1 {
  font-size: 24px;
  margin-bottom: 10px;
}

hr {
  width: 40%;
  border: 0;
  height: 1px;
  background: #ccc;
}

p {
  font-size: 16px;
  color: #555;
}