body{
    margin: 0;
    padding: 0;
}
.slide{
    height: 100vh;
    width: 100vw;
    background-repeat: no-repeat;
    background-size: 100%;
    background-attachment: fixed;
}
.one{
    background-image: url("images/top_logo-pc.png");
}
.two{
    background-image: url(images/slide-pc2.jpg);
}
.three{
    background-image: url(images/slide-pc1.jpg);
}
@media (max-width: 800px) {
	.one{
		background-image: url("images/top_logosp.png");
	}
	.two{
		background-image: url(images/slidesp2.jpg);
	}
	.three{
		background-image: url(images/slidesp1.jpg);
	}
}