body {
  font-family: sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

form {
  display: flex;
  flex-direction: column;
}

input[type="text"] {
  margin-bottom: 20px;
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button[type="submit"] {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #4caf50;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

#short-url-container {
  margin-top: 20px;
}

.short-url {
  display: block;
  margin-bottom: 20px;
  font-size: 18px;
  font-weight: bold;
  word-break: break-all;
}

.copy-button {
  display: inline-block;
  padding: 10px 20px;
  font-size: 16px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}