form {
  max-width: 600px;
  margin: 0 auto;
  border: 1px solid #ccc;
  padding: 20px;
}

label {
  display: block;
  margin-bottom: 10px;
}

input,
select {
  box-sizing: border-box;
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  margin-bottom: 20px;
}

input[type="datetime-local"],
input[type="number"] {
  width: auto;
}


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

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


label {
  display: inline-block;
  width: 200px; /* ラベルの幅を指定 */
  text-align: right;
  margin-right: 10px;
}

input, select {
  display: inline-block;
  width: 200px; /* 入力要素の幅を指定 */
  box-sizing: border-box;
  padding: 5px;
  margin-bottom: 10px;
}

#birthdate_year,
#birthdate_month,
#birthdate_day {
  width: 60px; /* 好みに応じて幅を調整 */
}

span#age {
  display: inline-block; /* 要素を行内ブロックにする */
  width: 20px; /* 要素の幅を設定 */
}

input[type="file"]::-webkit-file-upload-button {
  background: #007bff;
  color: #fff;
  border: none;
  padding: 8px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
}

input[type="file"]::before {
  content: "アップロード";
  color: #fff;
  margin-right: 5px;
}


#passport_image {
  font-size: 18px;
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
}



.upload-btn-wrapper {
  position: relative;
  overflow: hidden;
  display: inline-block;
  margin-bottom: 10px;
  vertical-align: bottom; /* 追加 */
}

.btn {
  display: inline-block;
  border: none;
  background: #0074d9;
  color: #fff;
  margin-top: 10px;
  padding: 8px 20px;
  font-size: 14px;
  cursor: pointer;
  text-align: center;
  display: inline-block;
  vertical-align: bottom; /* 追加 */
}

.allowed-formats {
  display: inline-block;
  margin-left: 10px;
  font-size: 12px;
  color: #888;
}

@media only screen and (max-width: 600px) {
form {
max-width: 100%;
margin: 0;
border: none;
padding: 10px;
}

label {
display: block;
width: 100%;
text-align: left;
margin-right: 0;
}

input,
select {
width: 100%;
margin-bottom: 10px;
}

input[type="datetime-local"],
input[type="number"] {
width: 100%;
}

#birthdate_year,
#birthdate_month,
#birthdate_day {
width: 30%;
}

span#age {
width: auto;
}

.upload-btn-wrapper {
margin-bottom: 20px;
}

.btn {
margin-top: 0;
}

.allowed-formats {
display: block;
margin-left: 0;
margin-top: 5px;
}
}