#main-container-fluid{
background:
url('https://wallpaperaccess.com/full/96689.jpg'),
linear-gradient(rgb(255, 255, 255), transparent),
linear-gradient(to top left, rgb(255, 255, 255), transparent),
linear-gradient(to top right, #b3b3b3, transparent);
background-blend-mode:multiply;
background-attachment: fixed;
background-position: center;
background-repeat: no-repeat;
}