body{
  margin:0;
  background:#ccc;
  font-size:0;
}

.wrapper{
  background:white;
  width:1024px;
  margin:0 auto;
}

#iframe-head, #iframe-foot{
  border:none;
  margin: auto;
  display: block;
}

.top-wrapper{
  height:80px;
}

.container{
  width: 1024px;
  padding: 0;
  margin: 0 auto;
}

.choice h1{
  font-size:26px;
  font-weight:normal;
  color:black;
  display:inline-block;
  margin:17px 0 0 20px;
  float:left
}

.event{
  font-size:33px;
  font-weight:bold;
  color:black;
}

.event2{
  font-size:25px;
  font-weight:bold;
  color:black;
}

.explanation a{
  font-size:35px;
  color:white;
  text-decoration:none;
}

.btn-explanation{
  padding:8px 45px;
  margin:-50px 0 0 850px;
  background:#8b0000;
  color:white;
  display:inline-block;
  opacity:0.8;
  border:5px solid #FF0000;
  border-radius:4px;
  position:relative;
}

.btn:hover{
  opacity:1;
}

.second-wrapper{
  height:85px;
}

#procedure{
  width:550px;
  display:inline-block;
  margin-left:265px;
}

ul {
  list-style: none;
}

.slide-wrapper {
  text-align: center;
  height:630px;
  width: 1024px;
  margin: 0 auto;
  color: #5e6f84;
  padding: 5px 0;
}

.flex{
  display:flex;
  justify-content: center;
  align-items: center;
}

.box p{
  font-size:15px;
  margin-bottom:2px;
}

.blue{
  color:darkblue;
  font-weight:bold;
}

.change-btn-wrapper {
  display:inline-block;
  width: 100px;
  font-size: 80px;
  font-weight:bold;
}

.change-btn-wrapper:after {
  content: "";
  clear: both;
  display: block;
}

.arrow{
  width:70px;
}

.arrow:hover{
  opacity:0.7;
}

.prev-btn {
  cursor: pointer;
  display: none;
}

.next-btn {
  cursor: pointer;
}

.slides {
  padding: 0;
}

.slide {
  display: none;
}

.active {
  display: block;
}

.slide img {
  width: 500px;
  height: auto;
  border:solid darkblue 4px;
  border-radius: 10px;
}

.index-btn-wrapper {
  font-size: 35px;
  margin-top: 5px;
}

.index-btn {
  display: inline-block;
  color:#000055;
  background-color:#ccffff;
  width: 100px;
  padding: 4px 5px;
  margin: 0 7px;
  border:solid darkblue 1px;
  border-radius: 5px;
  cursor: pointer;
}

.index-btn:hover {
  color: #fff;
  background-color: #5cabd0;
}

.small{
  font-size: 25px;
  color:#000055;
}

.bottom-wrapper{
  height;100px;
}

.btn-choice{
  display:flex;
}

.btn-rev{
  padding:8px 15px;
  margin:15px 0 10px 430px;
  background:#007700;
  color:white;
  display:inline-block;
  opacity:0.8;
  border-radius:4px;
}

.btn-back{
  padding:8px 15px;
  margin-left:30px;
  margin-top:15px;
  background:#004400;
  color:white;
  display:inline-block;
  opacity:0.8;
  border-radius:4px;
}

.btn-go{
  padding:12px 10px;
  margin:-665px 0 0 -130px;
  background:#000055;
  color:white;
  display:inline-block;
  opacity:0.8;
  border:5px solid #0000FF;
  border-radius:4px;
  position:absolute;
}

.btn-choice a{
  font-size:30px;
  color:white;
  text-decoration:none;
}