landing.css

body{
	background-color: #333;
	color: #fff;;
	text-align: center;
	line-height: 1.6;
}

#head{
	position: relative;
	font-family: 'IM Fell French Canon SC', serif;
	font-size: 20px;
	top: -150px;
	animation-name: head;
	animation-duration: 1.7s;
	animation-fill-mode: forwards;
	animation-timing-function: ease-in;

}

.details{
	max-width: 960px;
	margin: auto;
	padding: 0 30px;
	top: 150px ;
	left: -1250px;
	animation-name: details;
	animation-duration: 1.2s;
	animation-fill-mode: forwards;
	animation-timing-function: ease-out;
	transition-property: transform; 
}

#content{
	font-family: 'Merienda', cursive;
	position: relative;

}

@keyframes head{
	0%{top: -150px;}
	40%{top: 150px;}
	50%{top: 130px;}
	70%{top: 150px;}
	80%{top: 135px;}
	90%{top: 150px;}
	95%{top: 145px;}
	100%{top: 150px;}
}

@keyframes details{
	0%{left: -1250px;}
	75%{left: 15px; transform: skewX(-60deg);}
	100%{left: 15px;transform: skewX(0deg);}
}

#btn{
	display: inline-block;
	color: #fff;
	background-color: #333;
	text-decoration: none;
	padding: 1rem 2rem;
	border: #fff 1px solid;
	margin-top: 190px;
	opacity: 0;
	animation-name: btn;
	animation-duration: 1s;
	animation-delay: 2s;
	animation-fill-mode: forwards;
	transition-property: transform;
	transition-duration: 1s;

}

@keyframes btn{
	0%{opacity: 0;}
	100%{opacity: 1;}
}

#btn:hover{
	transform: rotateY(180deg);
}