html, body {
    margin: 0;
    font-family: "Open Sans", sans-serif;
    font-size: 18px;
}
    header, footer {
        height: 200px;
        background-color: #333;
        display: flex;
        flex-direction: column;
        justify-content: center;
        text-align: center;
        color: white;
    }
    section {
        background-color: #eee;
    }
    .container {
        width: 1200px;
        max-width: 100%;
        margin: 0 auto;
        padding: 40px;
        background-color: white;
    }
    .products {
        display: flex;
        flex-wrap: wrap;
        margin: 0 -40px;

    }
    .products .product {
        width: 25%;
        padding: 0 40px 40px;
        box-sizing: border-box;
    }
.products .product .image {
    margin-bottom: 20px;
}
.products .product .image img {
    max-width: 100%;
}
.products .product .title {
    margin-bottom: 20px;
}
.products .product .price {
    margin-bottom: 20px;
    font-size: 30px;
}
.btn {
    height: 40px;
    padding: 0 20px;
    min-width: 150px;
    background-color: seagreen;
    color: #fff;
    border: 0;
    font-size: 16px;
    cursor: pointer;
}
#order {
    max-width: 400px;
}
#order .title, #order .form-control {
    margin-bottom: 20px;
}
#order input[type="text"], #order input[type="number"] {
    height: 40px;
    border: 1px solid #ddd;
    padding: 0 10px;
    font-size: 16px;
    display: block;
    width: 100%;