.main {
    float: left;
    width: 35%;
    padding: 0 20px;
}


.right {
    float: left;
    width: 65%;
    padding: 15px;
    margin-top: 7px;
    text-align: left;
}

@media only screen and (max-width: 620px) {

    /* For mobile phones: */
    .menu,
    .main,
    .right {
        width: 100%;
    }
}