body{
    position: relative;
    background-image: url(./assets/Marvel\ superheroes\ wallpaper\ hd\ \ \ SF\ Wallpaper.jpg);
    height: 100%;
    background-repeat: no-repeat;
    background-size: cover;
}

main{
    margin-top: 2rem;
}

/* for favourite superhero card display */
.container{
margin: 2rem;
}

.row {
    display: flex;
    justify-content: flex-start;
}