/* Reset default styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Set font family and color */
body {
    font-family: Arial, sans-serif;
    color: #333;
}

/* Navigation styling */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: #f1f1f1;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.3);
}

.nav h1 {
    font-size: 30px;
    font-weight: bold;
}

.nav a {
    font-size: 20px;
    text-decoration: none;
    color: #f00c0c;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.nav a:hover {
    color: #0077b6;
}

/* Product filter styling */
#filter {
    display: block;
    margin: 30px auto;
    font-size: 24px;
    border: 2px solid #0077b6;
    border-radius: 5px;
    padding: 5px 10px;
    background-color: #f1f1f1;
    color: #0077b6;
    cursor: pointer;
    transition: all 0.3s ease;
}

#filter:hover {
    background-color: #0077b6;
    color: #f1f1f1;
}

/* Product container styling */
#product-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 30px;
    justify-content: center;
    margin: 30px auto;
    max-width: 1200px;
}

#product-container>div {
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.3);
    padding: 10px;
    background-color: #f1f1f1;
    border-radius: 5px;
    overflow: hidden;
    transition: all 0.3s ease;
}

#product-container>div:hover {
    transform: translateY(-8px);
}

#product-container>div>img {
    height: 200px;
    width: 100%;
    object-fit: cover;
    margin-bottom: 10px;
}

#product-container>div>h3 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
}

#product-container>div>p {
    font-size: 16px;
    margin-bottom: 10px;
}

#product-container>div>button {
    display: block;
    margin: auto;
    background-color: #0077b6;
    color: #f1f1f1;
    padding: 5px 10px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#product-container>div>button:hover {
    background-color: #f1f1f1;
    color: #0077b6;
}

/* For Mobile Devices */
@media only screen and (max-width: 767px) {

    /* Navigation styling */
    .nav {
        flex-direction: column;
        align-items: center;
        padding: 10px;
    }

    .nav h1 {
        margin-bottom: 10px;
    }

    .nav a {
        margin: 5px 0;
    }

    /* Product filter styling */
    #filter {
        font-size: 16px;
        padding: 5px;
        margin: 20px 0;
    }

    /* Product container styling */
    #product-container {
        grid-template-columns: repeat(2, 1fr);
        grid-gap: 20px;
        margin: 20px auto;
    }
}

/* For Tablet Devices */
@media only screen and (min-width: 768px) and (max-width: 991px) {

    /* Navigation styling */
    .nav {
        padding: 10px 30px;
    }

    /* Product filter styling */
    #filter {
        font-size: 20px;
        padding: 10px;
    }

    /* Product container styling */
    #product-container {
        grid-template-columns: repeat(3, 1fr);
        grid-gap: 20px;
        margin: 20px auto;
    }
}