* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: #f5f7fa;
  color: #222;
  padding: 40px;
}

h1 {
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

#input {
    width: 70%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1.5px solid #ccc;
    border-radius: 8px;
    outline: none;
    transition: all 0.2s ease;
    background: #fff;
}

#output {
    margin-top: 50px;
}

hr {
    margin-top: 100px;
}