button{
	outline: 0;
}
body {
	margin: 0px;
	padding: 0px;
}
header {
	height: 100px;
	background-color: #2196F3;
}
header span {
	font-size: 60px;
	color: #E0BF00;
}
section {
	height: 710px;
	background-color: #E3F2FD;
}
footer {
	height: 164px;
}
#u1 {
	height: 150px;
	background-color: #2474FF;
}
#u2 {
	height: 14px;
	background-color: #182dff;
}
#u1 span {
	float: left;
	font-size: .1em;
	position: relative;
	top: 147px;
}
#levelTitle {
	position: relative;
	/*距离 上面*/
	top: 35px;
}
#levelTitle span {
	/* 字体颜色  */
	color: red;
	/* 字体大小  */
	font-size: 50px;
}