body {
    width: 100%;
    margin: 0 auto;
}

div.content {
    display: flex;
    flex-direction: column;
    align-content: center;
    align-items: center;
    margin: 3% 15% 3% 15%;
}

@media screen and (max-width:1000px) {
    div.content {
        margin: 3% 7% 3% 7%;
    }
}