@charset "UTF-8";
.acbox{
  width: auto;
  font-size:0px; 
  margin:0 3px; 
}

.acbox label{
  width: auto;
  font-size: 20px; 
  font-weight: bold;
  text-align: center;
  background: #00bfff;
  position: relative;
  display: block;
  padding:8px;
  border-radius: 4px; 
  cursor: pointer;
  color: #fff;
}

.acbox label:hover{
  background: #4169e1;
}

.acbox input{
  display: none;
}

.acbox label::after{
  color: #fff;
  content:"▼"; 
  position: absolute;
  top: 50%;
  right: 15px;
  margin-top: -14px;
}

.acbox input:checked ~ label::after{
  content:"▲"; 
}

.acbox div{
  height: 0px;
  overflow: hidden;
  opacity: 0;
  transition: 0.20s; 
}

.acbox input:checked ~ div{
  height: auto;
  padding: 15px; 
  border-radius: 0px;
  background: #e6fffb; 
  opacity: 1;
}

.acbox input:checked ~ label{
  background: #4169e1; 
}

.acbox-under{
  font-size: 15px; 
  color: #000000; 
}