body {
  font-family: 'Roboto', sans-serif;
  background-color: #f7f7f7;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  background-color: #fff;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  max-width: 500px;
  width: 100%;
  text-align: center;
}

.title {
  font-size: 40px;
  font-weight: bold;
  text-align: center;
  color: #333;
  margin-bottom: 20px;
}

h4.center {
  text-align: center;
  color: #666;
}

.form-sample {
  margin-bottom: 20px;
}

.form-label {
  font-size: 25px;
  font-weight: 500;
  margin-bottom: 10px;
  display: block;
  color: #333;
  text-align: center;
}

.form-require {
  background-color: #ff6b6b;
  color: white;
  padding: 2px 8px;
  border-radius: 5px;
  font-size: 12px;
  margin-right: 5px;
}

.form-input {
  width: 120%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 16px;
  box-sizing: border-box;
}

.center {
  text-align: center;
}

.btn {
  background-color: #5a67d8;
  color: white;
  border: none;
  padding: 12px 25px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-size: 16px;
}

.btn:hover {
  background-color: #434190;
}

a {
  color: #5a67d8;
  text-decoration: none;
  font-size: 14px;
  margin-left: 20px;
}

a:hover {
  text-decoration: underline;
}


/* 桜を表示するコンテナのスタイル */
.cherry-blossom-container {
  position: relative;
  height: 100vh; /* コンテナの高さ */
  width: 100%; /* コンテナの横幅 */
  overflow: hidden; /* コンテナからはみ出した要素を隠す */
}

.sakura {
  position: absolute;
  z-index: -1;
  top: -10px;
  width: 30px;
  height: 30px;
  background: url('https://ss352548.stars.ne.jp/icon/bakemono1.png'); /* 桜の花びらの画像を指定 */
  animation: rotating-and-falling-anim 4s linear infinite;

  background-size: cover;

  /* z-index: 0; */
  opacity: 0.8;
}


/* animation */
@keyframes rotating-and-falling-anim {
	0% {
		transform: translateY(-100px) rotate(0);
	}
	100% {
		transform: translateY(850px) rotate(720deg);
	}
}