.grey-logo {
    margin: 20px;
    width: 220px;
}

.arrow-button img {
    width: 40px;
    height: 40px;
}

@media screen and (max-width: 600px) {
    .grey-logo {
        width: 50px;
        margin: 5px;
    }

    .arrow-button img {
        width: 20px;
        height: 20px;
    }
}