.ebook-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}
.ebook-card{
    background:#fff;
    padding:15px;
    border-radius:10px;
    box-shadow:0 5px 15px rgba(0,0,0,0.05);
    text-align:center;
}
.ebook-img img{
    width:100%;
    height:200px;
    object-fit:cover;
}
.ebook-btn{
    background:#000;
    color:#fff;
    padding:10px 15px;
    display:inline-block;
    margin-top:10px;
}
.ebook-checkout{
    display:flex;
    gap:30px;
    flex-wrap:wrap;
}
.ebook-input{
    width:100%;
    padding:12px;
    margin-bottom:10px;
}
.ebook-summary{
    background:#f5f5f5;
    padding:20px;
}
.ebook-pay-btn{
    width:100%;
    padding:15px;
    background:#000;
    color:#fff;
}