.main-container{
    margin: 30px ;
}

.library-container {
    width: 80%;
    margin: auto;
    background: white;
    padding: 20px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    
}

.library-header {
    text-align: center;
    padding: 20px;
    background-color: #0099ff;
    color: white;
    border-radius: 5px;
}

.categories, .search, .showcase, .contact {
    margin: 20px 0;
    padding: 15px;
    background: #ffffff;
    border-radius: 5px;
    box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.1);
}

.categories ul {
    list-style-type: none;
    padding: 0;
}

.categories li {
    padding: 5px;
    background: #e0e0e0;
    margin: 5px 0;
    border-radius: 3px;
}

.search input {
    width: 70%;
    padding: 10px;
    margin-right: 10px;
}

.search button {
    padding: 10px 15px;
    background: #0099ff;
    color: white;
    border: none;
    cursor: pointer;
}

.showcase .book-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.book {
    background: #f9f9f9;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    width: 150px;
}

.book img {
    width: 100%;
    height: auto;
    border-radius: 5px;
}

.contact {
    text-align: center;
    background: #0099ff;
    color: white;
    padding: 15px;
}