html {
  scroll-behavior: smooth;
}
body {
  animation: fade-in 0.5s;
  max-width: 960px;
  margin: 0 auto;
  background: #000000;
  font-family: sans-serif;
  font-size: 1.2rem;
  color: #CCCCCC;
}
a {
  color: inherit;
  text-decoration: none;
}
.star {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
h2 {
  position: absolute;
  top: 40px;
  left: 0;
  right: 0;
  text-align: center;
  color: #ffffff;
}
.s-PRB {
  position: absolute;
  top: 130px;
  left: 0;
  right: 0;
  text-align: center;
}
.s-PRB2 {
  width: 80px;
  animation: fade-in 2s;
}
.mokuji {
  position: absolute;
  top: 300px;
  left: 0;
  right: 0;
}
.photo {
  margin-top: -30px;
  text-align: center;
}
.photo_bottom {
  text-align: center;
}
.photo2 {
  width: 100%;
  height: auto;
  max-width: 830px;
  margin-bottom: 30px;
  animation: fade-in 2s;
}
.down {
  position: absolute;
  top: -150px;
  left: 0;
  right: 0;
  text-align: center;
}
.down2 {
  width: 100%;
  height: auto;
  max-width: 830px;
  animation: blinking 3.5s ease-in-out 3s infinite normal both;
}
@keyframes blinking {
  0% { transform: translateY(0); opacity: 0;}
  50% { opacity: 0.5;}
  100% { transform: translateY(80px); opacity: 0;}
}
.prb {
  box-sizing: border-box;
  width: 390px;
  height: 48px;
  padding: 0 10px;
  font-family: serif;
  font-size: 2rem;
  color: #fff;
}
.hline {
  width: 490px;
  border: 1px solid #ccc;
}
.flex1 {
  width: 880px;
  margin: -20px auto 50px auto;
  display: flex;
  align-items: center;
}
.combox {
  box-sizing: border-box;
  width: 100%;
  height: auto;
  max-width: 800px;
  margin: 0 auto 50px auto;
  padding: 0 10px;
  font-family: serif;
}
.sakuin {
  width: 600px;
  height: 0;
  font-family: serif;
  font-size: 1.2rem;
  margin: 20px auto -20px auto;
}
.songbox {
  width: 240px;
  height: 40px;
  display: block;
  text-align: center;
  line-height: 40px;
  background-color: rgb(0 0 0 / 50%);
  color: #ccc;
  border: 2px solid #666;
  font-family: serif;
  font-size: 1.2rem;
  border-radius: 6px;
  margin: 20px auto 0 auto;
}
.scrollbox {
  width: 800px;
  height: 400px;
  margin: 0 auto 50px auto;
  font-family: serif;
  overflow-y: scroll;
}
.sns {
  box-sizing: border-box;
  position: absolute;
  max-width: 850px;
  height: 40px;
  top: 36px;
  left: 0;
  right: 0;
  margin: 0 auto;
  padding-right: 10px;
  display: flex;
  justify-content: flex-end;
  gap: 0 20px;
}
.topmenu {
  position: fixed;
  max-width: 960px;
  height: 30px;
  top: 0;
  left: 0;
  right: 0;
  margin: 0 auto;
  font-family: serif;
  font-size: 1.0rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0 30px;
  background-color: rgb(0 0 0 / 70%);
}
.foot {
  margin: 30px 0;
  text-align: center;
  font-family: serif;
  font-size: 0.8rem;
}
@keyframes fade-in {
  0% {opacity: 0;}
  100% {opacity: 1;}
}