.form {
  font-family: 'Roboto', sans-serif;
  max-width: 640px;
  margin: 20px auto;
  padding: 20px;
  background-color: #fff;
  border: 1px solid #ccc;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.form label {
  display: block;
  margin: 15px 0 5px;
  color: #333;
  font-size: 14px;
}

.form input[type="text"],
.form input[type="date"],
.form input[type="tel"],
.form input[type="email"],
.form select,
.form textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.form input[type="submit"] {
  display: block;
  margin: 0 auto;
  background-color: #4CAF50;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.form input[type="submit"]:disabled {
  background-color: #cccccc;
  /* グレーの背景色 */
  color: #666666;
  /* テキストの色を暗くする */
  cursor: not-allowed;
  /* カーソルを禁止マークに */
}

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

.form input[type="radio"],
.form input[type="checkbox"] {
  margin: 0 10px 0 0;
}

.form .radio-group label,
.form .checkbox-group label {
  display: inline-block;
  margin-right: 20px;
}

.form h2 {
  color: #333;
  text-align: center;
  font-size: 24px;
  /* 文字のサイズを大きくします */
}

.required {
  color: #ff6666;
  /* Lighter red color */
  margin-left: 5px;
}

.radio-group {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.radio-group label {
  margin-right: 15px;
}

.radio-group input {
  margin-right: 5px;
}

.form a {
  color: #007bff;
  /* Link color */
  text-decoration: underline;
  /* Underline to indicate clickability */
  font-weight: bold;
  /* Make it bold to stand out */
}

.container {
  font-family: 'Arial', sans-serif;
  max-width: 600px;
  margin: 40px auto;
  padding: 20px;
  background-color: #f8f8f8;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.container h1 {
  color: #333;
  margin-bottom: 20px;
  font-size: 28px;
  /* Increase font size */
}

.container p {
  color: #666;
  line-height: 1.6;
  text-align: center;
  /* Center-aligns the text */
}