*{
	margin: 0px;
	padding: 0px;
}
body{
	width: 100%;
}
.main-content{
	width: 100%;
}
.header{
	width: 100%;
	height: 80px;
	text-align: center;
	line-height: 80px;
	background-color: #808080;
	color: #FFFFFF;
	border: 1px solid;
}
.top{
	width: 100%;
	height: 120px;
	line-height: 60px;
	font-size: 2rem;
	text-align: center;
	font-weight: bold;
	background-color: #FFFFE0;
	color: #FF8C00;
}
.middle{
	width: 100%;
	height: 350px;
	text-align: center;
}
.screenshot{
	height: 80px;
	line-height: 80px;
	font-weight: bold;
	font-size: 2rem;
}
.nav-list li{
	height: 50px;
	line-height: 50px;
	font-size: 1.5rem;
}
.nav-list li a{
	text-decoration: none;
	font-weight: 500;
	color: coral;
}
.nav-list li a:hover{
	font-weight: 600;
}
.nav-list a:visited{
	color: blue;
}
.footer{
	width: 100%;
	height: 30px;
	text-align: center;
	font-size: 1rem;
	line-height: 30px;
	font-weight: 500;
}
.blue{
	color:blue;				
}
.red{
	color: red;
}