body {
    background-color: #222;
    color: white;
    font-family: Arial, sans-serif;
    margin: 0;
}

header {
    background-color: black;
    border-bottom: 1px solid white;
    margin-bottom: 40px;
    padding: 1px 50px;
}

span {
    font-size: 1.2rem;
    padding-left: 10px;
}

.container {
    margin: 0 auto;
    max-width: 1100px;
    padding: 2rem;
    background-color: black;
    border: 1px inset #aaa;
}

.responsive-img {
    max-width: 100%;
}

.card {
    margin: 1rem;
}
.card img {
    display: block;
    border: 1px solid white;
}



@media screen and (min-width: 600px) {
    .grid {
        display: flex;
        flex-wrap: wrap;
        flex-direction: row;
        justify-content: center;
    }
    .card-img {
        width: 50%;
    }
}

@media screen and (max-width: 600px) {
    header {
        font-size: .7rem;
        padding: 1px 25px;
    }
    span {
        font-size: .9rem;
        padding-left: 5px;
    }
}