@charset "utf-8";

.topic_menu {
	position: relative;
	top: -2px;
	display: inline-block;
	margin-left: 10px;
	vertical-align: top;
}

.topic_menu_btn {
	position: relative;
	margin: 0; padding: 0;
	display: block;
	width: 24px; height: 24px;
	border: none;
	border-radius: 50%;
	background: #ccc;
    cursor: pointer;
}
.topic_menu_btn span {
	position: absolute;
	top: 50%; left: 50%;
	font-size: 20px;
	color: #000;
	transform: translate(-50%, -50%);
}
.topic_menu_btn:hover {
	background: #ddd;
}
.topic_menu_btn:hover span {
	color: #555;
}

.topic_menu_list {
	position: absolute;
	left: 0; top: 100%;
	display: none;
	margin: 3px 0 0; padding: 0;
	width: 100px;
	border: solid 1px #000;
	list-style: none;
	z-index: 1;
}
.topic_menu_list.active { display: block; }

.topic_menu_list li {
	margin: 0; padding: 0;
	background: #fff;
}
.topic_menu_list li+li {
	border-top: solid 1px #ccc;
}
.topic_menu_list li a {
	display: block;
	width: 100%;
	padding: 5px 10px;
	box-sizing: border-box;
	color: inherit;
	text-decoration: none;
}

.topic_menu_list li:hover {
	background: #ddd;
}