html, body {
     height: 100%;
     width: 100%;
}
 
body {
     margin: 0;
}
 
 
.glitch-img {
     position: fixed;
     width: 100%;
     height: 100%;
     top: 0;
     left: 0;
     background-position: center;
     background-size: cover;
     opacity: 1;
	z-index:-10 !important;
}