style.css

body {
    margin: 0;
    padding: 0;
}

/* style on superhero image */
#superhero {
    background-image: url("./images/waldemar-brandt-eIOPDU3Fkwk-unsplash.jpg");
    background-size: cover;
    box-sizing: border-box;
    width: 100%;
    height: 89vh;
    text-align: center;
}

#img-lft {
    width: 14rem;
    height: inherit;
}

/* superhero list item */
#adding-list::-webkit-scrollbar {
    display: none;
}

#adding-list {
    overflow: scroll;
    display: inline-block;
    width: 40%;
    height: 75vh;
    box-sizing: border-box;
    margin: 50px 0;
    background-color: rgba(255, 255, 255, 0.9);
    opacity: 1;
    list-style: none;
    text-align: center;
    overflow-x: hidden;
}


#adding-list li {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    flex-wrap: wrap;
    width: 100%;
    height: 35%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px dashed black;
}

#adding-list li:hover {
    background-color: black;
    color: whitesmoke;
    cursor: pointer;
}

/* heading */
#adding-list li h1 {
    width: 100px;
    transition: 0.5s all ease-in-out;
    padding: 20px;
    font-size: 30px;
}

#adding-list li h1:hover {
    text-shadow: 0px 0px 0px 10px whitesmoke;
    transform: scale(1.3);
}


/* image  */
#adding-list li img {
    left: 10rem;
    width: 120px;
    height: 120px;
    min-width: 100px;
    min-height: 100px;
    transition: 0.5s all ease-in-out;
}

#adding-list li img:hover {
    transform: scale(1.3);
    box-shadow: 0px 0px 5px 5px whitesmoke;
}

/* icon heart */
#adding-list li i {
    padding-right: 20px;
    font-size: 2rem;
    color: darkcyan;
    transition: 0.5s all ease-in-out;
}

#adding-list li i:hover {
    text-shadow: 0px 0px 50px whitesmoke;
    transform: scale(1.2);
}