quizzer.css

body {
	background-color: #7CBB7A;
	margin: 0;
	font-family: 'Open sans', sans-serif;
}

* {
	box-sizing: border-box;
}

button {
	border: none;
	border-radius: 6px;
	padding: 10px 20px;
	font-size: 20px;
	color: #fff;
	background-color: #ccc;
}

header .title {
	background-color: #767D76;
	color: #fff;
	text-align: center;
	padding: 15px;
}

header h1, header h2 {
	margin: 0;
}

header div.countdown {
	float: right;
}

header div.points {
	float: left;
	-webkit-transition: color 0.5s;
    transition: color 0.5s;
}

header div.points.animate.right {
	color: #767D76;
}

header div.points.animate.wrong {
	color: #bf0000;
}

header div.countdown, header div.points {
	font-weight: bold;
	margin: 10px;
	color: #fff;
	padding: 0px;
	font-size: 26px;
}

.card {
	background-color: red;
	width: 500px;
	background-color: #fff;
	margin: 100px auto 30px auto;
	border-radius: 6px;
	text-align: center;
	padding: 20px;
}

div.start .card {
	display: block;
}

div.start .card p, .question.card span.question {
	font-size: 25px;
}

.card.question {
	display: none;
}

.card.question.active {
	display: block;
}

.card.question .options {
	padding: 0;
	list-style: none;
	margin-top: 35px;
}

.card.question .options > li {
	margin: 10px 80px;
}

.card.question .options > li label {
	background-color: #7ED2CF;
	display: block;
	padding: 10px;
	border-radius: 20px;
}

.card.question .options > li label:hover {
	background-color: #8EE8E5;
}

.card.question .options > li input:checked + label {
	background-color: #4D8E8C !important;
	color: #fff;
}

.card.question .options > li input {
	opacity: 0;
	display: none;
}

.finish {
	display: none;
}

.card.finish p {
	font-size: 22px;
}

.card.finish .final_points {
	font-size: 40px;
	font-weight: bolder;
}

.play_again,
button.start {
	width: 200px;
	margin: 0 auto 20px auto;
	color: #fff;
}