*{
    margin: 5px;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: grey;
    color: rgb(0, 0, 0);
}

main article{
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(300px,1fr));
}

main article img {
    width: 100%;
    height: auto;
}

h3 {
    font-family: Arial, Helvetica, sans-serif;
}

h1 {
    font-family: Arial, Helvetica, sans-serif;
}