main{
  margin: auto;
  width:800px;
  height:1000px;
  padding:20px;
  border: 2px solid black;
  border-radius: 30px;
}
body{
  font-size: 20px;
}
#haruka{
  position: absolute;
  display: flex;
  z-index:99;
  height:200px;
}
#left{
  width:420px;
  height:290px;
  border: 2px solid black;
  margin-top:10px;
}
#right{
  height:290px;
  width:200px;
  border: 2px solid black;
  margin-top: 10px;
  margin-left: 10px;
  overflow-y: scroll;
}
#wrap{
  margin: auto;
  width:775px;
  height: 975px;
  border: 4px groove black;
  background: white;
  padding:10px;
  border-radius:5px;
}
#thang{
  position: absolute;
  margin-top: -445px;
  border: 2px solid black;
  width:635px;
  height:40px;
}
nav{
  border: 2px solid black;
  margin-top: 10px;
  margin-left: 10px;
  width:120px;
  height:745px;
  border-radius: 0 0 50px 0;
}
section{
  display: flex;
}
header{
  width:760px;
  height:200px;
  border: 2px solid black;
  border-radius: 50px 50px 5px 5px;
  padding:5px;
  overflow: hidden;
}
header h1{
  margin: 0;
  font-size: 80px;
}