body{
	font-family:"맑은 고딕", "고딕", "굴림";
}
header {
	width: 80%;
    height: 150px;
	margin-right: auto;
	margin-left: auto;
	background-image: url("animal.png") ;
	overflow: hidden;
}

header h1{
	width:40%;
	float:left;	
	color:#ffffff;
}

header nav {
	width:60%;
	float:right;	
}

nav ul li{
    font-size: 20px;
	display: inline;
	margin: 15px;
}

article{
	width: 80%;
    height:600px;
	margin-right: auto;
	margin-left: auto;
	border:3px solid #333;
	padding:5px;
	overflow:hidden;
}

p {
	font-size:15px;
	line-height:20px;
}
 /* -------------------------------------------------- */

img { float: right;}

article section{
	width:30%;
    height:500px;
	float:left;
	margin:10px;
	padding:5px;
	border:1px dotted #333;
	transition : 2s;
}
article section:hover{
		background-color: pink;
		border:1px solid violet;
}
aside{
	clear:both;
	margin:0 auto;
	width:80%;
	height:auto;
	padding:10px;
	background-color: lightgray;
}
footer{
	clear:both;
	width: 80%;
	margin-right: auto;
	margin-left: auto;	
	margin-top:0;
	padding:10px;
	background-color:#333;
	color:white;	
	text-align:center;
}