html {
  background-color: #fffff2;
}

a:-webkit-any-link {
  cursor: pointer;
}
a:-webkit-any-link:hover {
  cursor: pointer; /* カーソルを指の形にする */
  opacity: 0.5; /* 透明度を50%（薄く）にする */
  transition: opacity 0.3s; /* 薄くなるアニメーションをスムーズにする（任意） */
}

header {
  z-index: 1;
  position: fixed;
  top: 0;
  left: 0;
  margin: auto;
  padding: 0;
  width: 100%;
  height: 60px;
}

.header-logo {
  animation-name: fadeDownAnime;
  animation-duration: 0.8s;
  animation-fill-mode: forwards;
  display: flex;
  align-items: center;
  height: 100%;
}

.header-inner img {
  width: 40%;
  margin: 30px;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 90%;
  margin: auto;
}

.back {
  text-align: center;
}

.back a {
  font-weight: 600;
  font-size: small;
  color: #333;
  text-decoration: none;
}

.loading-5 {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 200px 200px 120px;
}

.loading-5 span {
  display: inline-block;
  color: #25d050;
  font-weight: 600;
  font-size: 1.5em;
  animation: animation-loading-5 1s infinite;
}

.loading-5 span:nth-of-type(2) {
  animation-delay: 0.1s;
}

.loading-5 span:nth-of-type(3) {
  animation-delay: 0.2s;
}

.loading-5 span:nth-of-type(4) {
  animation-delay: 0.3s;
}

.loading-5 span:nth-of-type(5) {
  animation-delay: 0.4s;
}

.loading-5 span:nth-of-type(6) {
  animation-delay: 0.5s;
}

.loading-5 span:nth-of-type(7) {
  animation-delay: 0.6s;
}

.loading-5 span:nth-of-type(8) {
  animation-delay: 0.7s;
}

.loading-5 span:nth-of-type(9) {
  animation-delay: 0.8s;
}

.loading-5 span:nth-of-type(10) {
  animation-delay: 0.9s;
}

@keyframes animation-loading-5 {
  50% {
    transform: translateY(10px);
  }
}