body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
}

.container {
  width: 600px;
  max-width: calc(100% - 40px);

  margin: 40px auto;
  padding: 24px;

  background-color: white;
}

h1 {
  font-size: 24px;
}

form {
  margin-bottom: 30px;
}

form div {
  margin-bottom: 15px;
}

label {
  display: block;
  margin-bottom: 5px;
}

input[type="text"] {
  width: 100%;
  padding: 8px;
  box-sizing: border-box;
}

button {
  padding: 8px 16px;
}

hr {
  margin: 30px 0;
}