.card_select_area{
  border: #000000 1px solid;
  width: 100%;
  height: 310px;
  overflow-y: hidden;
  overflow-x: hidden;
}
.subject_item{
  margin: 10px;
	border-radius: 5px;
	padding: 10px 20px;
	font-size: 1.2em;
	cursor: pointer;
	border: none;
	box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
	transition: background-color 0.3s ease;
}
.subject_item.selected {
  background-color: rgb(202, 0, 202);
  color: white;
}