body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: #f4f4f4;
}

.overview {
    background-color: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.overview h2 {
    font-size: 1.5em;
    margin-top: 0;
    color: green;
}

.specifications {
    background-color: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.specifications h2 {
    font-size: 1.5em;
    margin-top: 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #2c3e50;
}

th {
    background-color: #2c3e50;
    width: 30%;
    vertical-align: top;
}

td {
    font-size: 0.9em;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #007bff;
    color: white;
    position: relative;
    bottom: 0;
    width: 100%;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 1.5em;
    }

    .overview, .specifications {
        padding: 10px;
    }

    th, td {
        display: block;
        width: 100%;
    }

    th {
        background-color: #e9ecef;
    }
}