#bladnet-particles{

    position:fixed;

    top:0;

    left:0;

    width:100%;

    height:640px;

    z-index:-1;

    pointer-events:none;

    background:linear-gradient(
        to bottom,
        rgba(7,20,40,.95) 0%,
        rgba(7,20,40,.75) 70%,
        rgba(7,20,40,0) 100%
    );

}