styles.css

* {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}

html, body {
	width: 100vw;
	height: 100vh;
	font-size: 18px;
	line-height: 1.6;
	overflow: hidden;
}

body {
	color: #FFFFFF;
	background-color: #2DB1E5;
	font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;	
}

.wrapper {
	width: 100vw;
	height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
}

.sun,
.askpermission  {
	opacity: 1;
	-webkit-transition: opacity 1s ease;
	   -moz-transition: opacity 1s ease;
	     -o-transition: opacity 1s ease;
	        transition: opacity 1s ease;
}

.sun.sunhover {
	cursor: pointer;
}

.sun.hidden,
.askpermission.hidden {
	opacity: 0;
}

.askpermission,
.infos {
	position: fixed;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
}

.askpermission {
	width: 400px;
	max-width: calc(100vw - 2rem);
}

.askpermission p {
	font-size: 1.25rem;
}

.askpermission .buttons {
	display: flex;
	justify-content: space-between;
	margin-top: 3.2rem;
}

.askpermission input {
	font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
	font-size: 1rem;
	color: #EEE;

	padding: 0.4rem 0.75rem;
	border: 1px solid #EEE;
	border-radius: 0.3rem;
	background: transparent;
	cursor: pointer;

	-webkit-transition: all 0.3s ease;
	   -moz-transition: all 0.3s ease;
	     -o-transition: all 0.3s ease;
	        transition: all 0.3s ease;
}

.askpermission input:hover,
.askpermission input:focus {
	border-color: #FFF;
	color: #FFF;
	outline: none;
}