.overlay {
	position: fixed;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	background: rgba(0, 0, 0, 0.7);
	transition: opacity 500ms;
	visibility: hidden;
	opacity: 0;
}

.overlay:target {
	visibility: visible;
	opacity: 1;
	z-index: 999;
}

.popup {
	margin: 70px auto;
	padding: 20px;
	background: #fff;
	border-radius: 5px;
	width: 40%;
	position: relative;
	transition: all 5s ease-in-out;
}

.popup h2 {
	margin-top: 0;
	color: #333;
	font-family: Tahoma, Arial, sans-serif;
}

.popup .close {
	position: absolute;
	top: 10px;
	right: 30px;
	transition: all 200ms;
	font-size: 30px;
	font-weight: bold;
	text-decoration: none;
	color: #333;
}

.popup .content {
	background: rgba(0, 0, 0, .05);
}

.popup .close:hover {
	color: red;
}

.popup .content {
	max-height: 30%;
	overflow: auto;
}

@media screen and (max-width: 700px) {
	.box {
		width: 70%;
	}

	.popup {
		width: 70%;
	}
}

.check-list {
	list-style: none;
	display: inline-block;
}

.check-list li:before {
	content: '✓ ';
}

.check-list a {
	color: black;
}

.highlight:hover {
	color: blue;
}