*{
	margin: 0;
	padding: 0;
}
.to-left,
.to-right,
.to-top,
.shot{
	position: fixed;
	width: 50px;
	height: 50px;
	line-height: 40px;
	border-radius: 50%;
	text-align: center;
	font-size: 26px;
}
.to-left{
	background: url("../img/left.png");
	background-size: contain;
}
.to-right{
	background: url("../img/right.png");
	background-size: contain;
}
.to-top{
	background: url("../img/up.png");
	background-size: contain;
}
.shot{
	background: url("../img/shot.png");
	background-size: contain;
}
@media (orientation:portrait) {
	.box{
		position: fixed;
		top: 0;
		bottom: 0;
		left: 0;
		right: 0;
		box-sizing: border-box;
		// overflow: hidden;
		background-color: #6b88ff;
	}
	.to-left{
		left: 100px;
		top: 20px;
	}
	.to-right{
		left: 100px;
		top: 100px;
	}
	.to-top{
		left: 60px;
		bottom: 80px;
	}
	.shot{
		left: 120px;
		bottom: 40px;
	}
	.to-left,
	.to-right,
	.to-top,
	.shot,
	.canvas{
		transform:rotate(90deg);
	}
}
@media (orientation:landscape) {
	.box{
		position: fixed;
		top: 0;
		bottom: 0;
		left: 0;
		right: 0;
		box-sizing: border-box;
		// overflow: hidden;
		background-color: #6b88ff;
	}
	.to-left{
		bottom: 100px;
		left: 20px;
	}
	.to-right{
		bottom: 100px;
		left: 100px;
	}
	.to-top{
		right: 80px;
		bottom: 60px;
	}
	.shot{
		right: 40px;
		bottom: 120px;
	}
}