.bg-fish {
    /* The image used */
    background-image: url("../assets/fish.jpg");

    /* Full height */
    height: 100%;

    /* Center and scale the image nicely */
    background-position: top;
    background-repeat: no-repeat;
    background-size: cover;
}

.bg-nebula {
    /* The image used */
    background-image: url("../assets/nebulaB.jpg");

    /* Full height */
    height: 100%;

    /* Center and scale the image nicely */
    background-position: top;
    background-repeat: no-repeat;
    background-size: cover;
}