스트레이
데마시아
.collapsible-content {
display: none;
}
.collapsible-header {
cursor: pointer; font-weight: bold;
}
.collapsible-header::after {
content: "+"; float: right;
}
.collapsible.active .collapsible-content {
display: block;
}
.collapsible.active .collapsible-header::after {
content: "-";
}