@charset "UTF-8";

summary {
	list-style-type: none;
}
summary::-webkit-details-marker {
	display: none;
}
summary{
	position:relative;
}
summary:before {
	content: "＋";
	font-size: 24px;
	position: absolute;
	top:-10%;
	left: 2%;
}
details[open] summary:before,
summary details[open] summary:before {
	content: "−";
}
details{
	margin: 2rem 0;
}