/* CSSリセット */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html, body {
  height: 100%;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  background: none;
}
a {
  color: inherit;
  text-decoration: none;
}
ul, ol {
  list-style: none;
}



body {
  font-family: Arial, sans-serif;
  background-color: #f8f9fa;
  color: #333;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.wrap {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}
.wrap h1 {
  text-align: center;
  margin-bottom: 20px;
}
.wrap form {
  display: flex;
  flex-direction: column;
}
.wrap label {
  margin-bottom: 5px;
  font-weight: bold;
}
.wrap input {
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 5px;
}
.wrap button {
  background-color: #007BFF;
  color: white;
  border: none;
  padding: 12px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  margin: 16px auto;
}
.wrap button:hover {
  background-color: #0056b3;
}

.wrap .message_title {
  text-align: center;
  font-size: 18px;
  color: #007BFF;
}
.wrap .message {
  margin-top: 20px;
  text-align: left;
  font-size: 16px;
  color: #007BFF;
}
.wrap .error {
  color: red;
  font-weight: bold;
}

.page_back {
  position: absolute;
  text-decoration: underline;
  top: 2%;
  right: 2%;
}

@media screen and (max-width: 800px) {
  body {
      padding: 10px;
  }
}