body {
    font-family: 'Yu Gothic', 'Noto Sans JP', sans-serif;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
  }
  
  .register-container {
    max-width: 400px;
    margin: 80px auto;
    padding: 30px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  }
  
  .register-container h1 {
    text-align: center;
    color: lightblue;
    margin-bottom: 30px;
  }
  
  form {
    display: flex;
    flex-direction: column;
  }
  
  label {
    margin-top: 15px;
    font-weight: bold;
  }
  
  input {
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
  }
  
  button {
    margin-top: 30px;
    padding: 12px;
    background-color: lightblue;
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background-color: blue;
  }