.header {
    background: #8e798a;
}
.header picture img {
    margin: 38px 0 0 0;
    width: 63%;
}
@media (min-width: 768px) {
    .header picture img {
        margin: 42px 0 0 0;
        width: 68%;
    }
}
@media (min-width: 1024px) {
    .header picture img {
        margin: 68px 0 0 0;
        width: 63%;
    }
}