@charset="utf-8";

#body {
  background-image: url("haikei2.png");
  background-size: cover;
  background-position: center;
}

#h1 {
  font-size: 28px;
  color: #ffffff;
  text-align: center;
}

#theme {
  position:
  top: 0;
  text-align: center;
  maegin: 0px;
}

#box {
  display: flex;
  margin: 20px;
  align-items: stretch;
}

#menu {
  width: 200px;
  padding: 10px;
  border: solid 3px #A0857C;
  background-color: #FFFEF6;
  position: sticky;
  top: 20px;    
  z-index: 10;
  overflow-y: auto;
}


#contents {
  width: 100%;
  padding: 20px;
  border: solid 3px #A0857C;
  background-color: #FFFEF6;
}

#explain {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: dotted 2px #000000;
}

#iframe {
  position: relative;
  width: 100%;
}

#iframe2 {
  position: relative;
  width: 100%;
}

#iframe3 {
  position: relative;
  width: 100%;
}


#iframe p:first-child,
#iframe2 p:first-child,
#iframe3 p:first-child,
#iframe p:first-child,
#iframe3 p:first-child {
  font-size: 24px;
  font-weight: bold;
}

#footer {
  display: flex;
  justify-content: center; 
  align-items: center;     
  text-align: center; 
}

.address{
  width:18%;
  height: auto;
}