body{
  display: flex;
  justify-content: center;
  margin: 0;
}

._root{
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 480px;
  background-image: url("../img/ch/b.jpg");
  background-size: 100% 100%;
  position: relative;
  height: 100vh;
  overflow-y: auto;
}
._control-box{
  display: flex;
  flex-direction: row;
  background-color: hsla(0,0%,100%,.701961);
  justify-content: space-between;
  width: 95%;
  margin: 0.5em;
  flex-wrap: wrap;
}

._control-box-hide{
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  width: 95%;
  margin: 0.5em;
  flex-wrap: wrap;
}

._lab{
  width: calc(95%/3);
  text-align: center;
  padding-top: 0.5em;
  padding-bottom: 0.5em;
}

a {
 text-decoration:none;
 color:#000;
 font-size:20px
}

._txt{
  width: calc(95%/3);
  text-align: center;
  padding-top: 0.5em;
  padding-bottom: 0.5em;
  color:#000;
  font-size:20px;
}

._item{
  display: flex;
  flex-direction: column;
  width: calc(95%/3);
  justify-content: space-between;
  align-items: center;
}

._item-pack{
  background-color: hsla(0,0%,100%,.701961);
  display: flex;
  flex-direction: column;
  width: calc(95%/3);
  justify-content: space-between;
  align-items: center;
  padding-top: 5px;
  margin-bottom: 6px;
}

._input{
  width: 70px;
  text-align: center;
  margin-bottom: 10px;
}

._yy{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

._yy1{
  display: flex;
  padding-bottom: 0.5em;
  justify-content: space-between;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

._item-pack1{
  display: flex;
  flex-direction: column;
  width: calc(95%/3);
  justify-content: space-between;
  align-items: center;
  padding-top: 5px;
  margin-bottom: 6px;
}

._button{
  display: flex;
  width: 11em;
  height: 2.5em;
  justify-content: center;
  align-items: center;
  font-size: 15px;
}