*{margin:0px;
padding:0px;
box-sizing:border-box;
}
body{
	background-color:#f1f1f1;
}
header{
	text-align:center;
	padding:10px;
}
main{
	width:100%;
	height:1000px;
	margin:0 auto;
	/* padding:130px 120px; */
}
/* article{
	background:white;
	padding:520px;
	margin-bottom:20px;
	border-radius:5px;
} */
footer{
	text-align:center;
	/* background-color:#333;*/
	border:1px solid green;
	padding:20px;
	font-size:25px;
	bottom:0;
	width:100%;
	position:fixed;
	z-index:1;
}