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

.container {
  max-width: 1024px;
  margin: 0 auto;
  padding: 20px;
  box-sizing: border-box;
}

header {
  background-color: #2980b9;
  color: #fff;
  text-align: center;
  padding: 20px;
}

header h1 {
  margin: 0;
}

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

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

main {
  padding: 20px;
}

article {
  background-color: #fff;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

footer {
  background-color: #2980b9;
  color: #fff;
  text-align: center;
  padding: 20px;
}