.book_main_page {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(90deg, #ffecd2, #fcb69f);
    margin: 0;
    padding: 40px;
}

.book_main_page h1 {
    text-align: center;
    color: #333;
    font-size: 40px;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

/* Search bar styling */
.book_main_page #search {
    display: block;
    width: 55%;
    margin: 0 auto 30px;
    padding: 15px 20px;
    font-size: 18px;
    border-radius: 50px;
    border: none;
    outline: none;
    transition: 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.book_main_page #search:focus {
    width: 70%;
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}