body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

.controls {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.controls button {
    padding: 10px 20px;
    margin: 0 10px;
    cursor: pointer;
}

.sort-popup, .filter-popup {
    display: none;
    position: absolute;
    background-color: white;
    border: 1px solid #ccc;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    padding: 20px;
    z-index: 10;
}

.sort-popup button, .filter-popup button {
    display: block;
    width: 100%;
    margin: 10px 0;
    padding: 10px;
    cursor: pointer;
}

.filter-popup div {
    margin-bottom: 20px;
}

.filter-popup label {
    display: block;
    margin: 5px 0;
}

.products {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.product-item {
    border: 1px solid #ccc;
    padding: 20px;
    width: 200px;
    text-align: center;
}