body {
    background-image: url("../img/girisfon.jpg");
	background-repeat: no-repeat;
	background-attachment: fixed;
	background-position: center;
	background-size: 100% 100%;
}
.network-background-canvas {
    position: fixed;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    z-index: -1000;
}