.tate {
  writing-mode: tb-rl;
  background-color:darkturquoise;
  color:white;}
.size{font-size:200%;}

div{
  display: flex;
  flex: 1;
}
main{
  flex: 1;
}
.migi{text-align:right;}
.midasi{background-color:darkturquoise;
     color:white;}
th{border-style:solid;border-color:darkturquoise;
color:darkturquoise;}