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

header, main {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px;
}

nav a {
  margin-right: 14px;
}

.button {
  display: inline-block;
  padding: 10px 16px;
  text-decoration: none;
  border: 1px solid #333;
}

form {
  display: grid;
  gap: 10px;
  max-width: 500px;
}