img {
    border-radius: 3rem;
    width: 40%;
    height: auto;
    margin: 2rem;
}


article{
    display: flex;
    flex-direction: row;
    align-items: center;
}

article:nth-child(odd) {
    flex-direction: row-reverse;
}



@media screen and (max-width:800px) {
    article {
        display: block
    }

    article img {
        width: 100%;
        height: auto;
        margin-left: auto;
        margin-right: auto;
    }
}

div {
    width: 40%;
    height: auto;
    margin-left: auto;
    margin-right: auto;
}

aside {
    width: 75%;
    height: auto;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}


iframe {
    width: 40%;
    height: auto;
}