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

form {
  margin-bottom: 20px;
}

label {
  font-weight: bold;
}

input[type="text"] {
  width: 100%;
  height: 50%;
  padding: 20px;
  margin-bottom: 10px;
  box-sizing: border-box;
  
}

button[type="submit"] {
  background-color: #4CAF50;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button[type="submit"]:hover {
  background-color: #45a049;
}

#output {
  font-size: 24px;
}

header {
  background-color: #333;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}


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

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

nav li:last-child {
  margin-right: 0;
}

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

main {
  padding: 20px;
}

h1, h2 {
  font-size: 36px;
  margin: 0 0 20px;
}

p {
  font-size: 18px;
  line-height: 1.5;
  text-align: justify;
}

@media (min-width: 768px) {
  header {
    padding: 20px 40px;
  }
}

@media (min-width: 1024px) {
  main {
    max-width: 960px;
    margin: 0 auto;
    text-align: left;
  }
}