main.css

/* welcome page */
#hello-cont a:hover{
    border-radius: 26px;
    background: linear-gradient(145deg, #252525, #131313);
    box-shadow:  13px 13px 26px #414141,
                -13px -13px 26px #808080;
}

/* disabled-button */
.disabled-button {
    cursor: not-allowed;
}

/* alert text */
#alert p {
    margin-bottom: 0;
}

/* the add books button */
#addBook {
    position: absolute;
    top: 560px;
    right: 210px;
    font-size: 1.6rem;
    color: rgb(125, 255, 125);
    transition: all 0.3s;
}
#addBook:hover {
    color: rgb(0, 255, 0);
}

/* the books cont */
.book {
    border-radius: 5px;
    position: relative;
    height: 180px;
    width: 450px;
    padding: 3%;
    margin: 3rem;
}
.book .btns .exit-x {
    position: absolute;
    top: 12px;
    right: 10px;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
}
.book .btns .edit-pen {
    position: absolute;
    top: 130px;
    right: 5px;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
}
.book h2 {
    font-weight: 300;
    font-size: 1.6rem;
}
.book h3 {
    margin-bottom: 4%;
    font-weight: 200;
    font-size: 1.2rem;
}
.book p {
    font-weight: 200;
    margin-bottom: 0;
}

#isbn {
    font-size: 0.6rem;
}

/* implement this styling when the book is not read */
.book-not-read {
    background-image: linear-gradient(56deg, #282b2d 0%, #4f5559 100%);
    color: white;
}
.book-not-read #btns p {
    color: white;
}

/* implement this styling when the book is read */
.book-read {
    background-image: linear-gradient(56deg, rgb(125, 255, 125) 0%, rgb(0, 255, 0) 100%);
    color: black;
}
.book-read #btns p {
    color: black;
}



/* footer */
#footer {
    margin-top: 22%;
    font-size: 1.3rem;
}
#footer a {
    color: rgb(125, 255, 125);
    padding: 0.5rem;
    transition: all 0.4s;
}
#footer a:hover {
    color: rgb(0, 255, 0);
    border-radius: 6px;
    background-color: rgba(0, 0, 0, 0.2);
}