body {
    font-size: 16px;
    font-family: "Oswald", sans-serif;
    background-color: #cfedf7;
}

header,
main,
footer {
    max-width: 1000px;
    margin: 0 auto;
}

h1 {
    border: 1px solid #ccc;
    padding: 1rem;
    background-color: #3d96fc;
    text-align: center;
}

main {
    box-shadow: 0 0 3rem #777;
    padding: 1.5rem;
}

footer {
    padding: 1rem;
    background-color: #3d96fc;
    border-top: 1px solid #555;
    text-align: center;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

section {
    margin: 5px;
    padding: 1rem;
    background-color: #1580faad;
    text-align: center;
}

section img {
    width: 100%;
    box-shadow: 0 0 50px #555;
}