*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, Helvetica, sans-serif;
}

body{
    background:#f7f7f7;
}

.collection-layout{
    display:grid;
    grid-template-columns:280px 1fr;
    gap:120px;
    max-width:auto;
    margin:40px auto;
    padding:0 30px;
}

.sidebar{
    background:#fff;
    padding:25px;
    border:1px solid #ddd;
    border-radius:8px;
    height:fit-content;
    position:sticky;
    top:20px;
}

.sidebar h2{
    margin-bottom:25px;
}

.filter-group{
    margin-bottom:30px;
}

.filter-group h3{
    margin-bottom:12px;
    font-size:16px;
}

.filter-group label{
    display:block;
    margin-bottom:8px;
    cursor:pointer;
}

.products{
    display:flex;
    flex-direction:column;
}

.toolbar{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:25px;
}

.toolbar select{
    padding:10px 15px;
}

.comic-grid{

    display:grid;

    grid-template-columns:repeat(auto-fill,minmax(220px,1fr));

    gap:28px;

}

.comic-card{

    background:white;

    border:1px solid #ddd;

    transition:.25s;

    border-radius:6px;

    overflow:hidden;

}

.comic-card:hover{

    transform:translateY(-6px);

    box-shadow:0 10px 25px rgba(0,0,0,.12);

}

.comic-card img{

    width:100%;

    display:block;

    aspect-ratio:2/3;

    object-fit:cover;

}

.comic-card h4{

    padding:15px;

    font-size:17px;

}

.price{

    padding:0 15px;

    font-weight:bold;

    color:#d62828;

}

.comic-card button{

    margin:15px;

    width:calc(100% - 30px);

    padding:12px;

    border:none;

    background:#111;

    color:white;

    cursor:pointer;

}

.comic-card button:hover{

    background:#d62828;

}

@media (max-width:900px){

.collection-layout{

grid-template-columns:1fr;

}

.sidebar{

position:relative;

top:0;

}

}