style.css

body, h1 {
	margin: 0;
	padding: 0;
}

body {
	background-color: rgb(149,207,114);
}

h1 {
	font-size: 32px;
	padding: 20px;
	text-align: center;
	background-color: rgb(131,194,93);
}

.content {
	display: block;
	background-color: rgb(203,240,180);
	width: 800px;
	height: 650px;
	padding: 30px 80px 10px 80px;
	margin: auto;
}

.sidebar {
	width: 150px;
	height: 590px;
	float: left;
	text-align: center;
	padding: 10px;
	margin-left: 5px;
	outline: none;
}

.settings, .stats {
	width: 150px;
	margin-bottom: 115px;
	text-align: center;
}

label {
	display: inline-block;
	width: 50px;
	text-align: right;
}
input {
	margin: 5px 0;
	width: 50px;
	text-align: center;
}

#shuffle {
	padding: 5px 10px;
	font-size: 20px;
	border: solid 4px rgb(149,207,114);
	border-radius: 5px;
	background-color: rgb(203,240,180);
	text-align: center;
	cursor: pointer;
	outline: none;
	-webkit-transition: background-color 0.3s;
	transition: background-color 0.3s;
}
#shuffle:hover {
	background-color: rgb(162,217,128);
}

#shuffle:active {
	background-color: rgb(150,227,102);
}

.box {
	position: relative;
	float: left;
 	width: 450px;
	height: 450px;
	padding: 80px;
	background-color: white;
}

.block {
	display: block;
	position: absolute;
	box-sizing: border-box;
	width: 25%;
	height: 25%;
	padding: 1%;
	text-align: center;
	cursor: pointer;
	-webkit-transition: left 0.5s, top 0.5s;
	transition: left 0.5s, top 0.5s;
	overflow: hidden;
}

.block span {
	width: 400%;
	height: 400%;
	display: block;
	background: url(src/1.jpg);
	background-size: cover;
	background-position: center;
	position: absolute;
	top: 0;
	left: 0;
}

.block h2 {
	position: relative;
	font-size: 48px;
	color: rgba(0,0,255,0.4);
	z-index: 200;
}

#description {
	padding-top: 10px;
	padding-left: 135px;
	clear: both;
}

.footer {
	height: 60px;
	box-shadow: 0px 500px 0px 500px rgb(131,194,93);
	background-color: rgb(131,194,93);
}