@media (min-width: 720px) {
    .topdiv .profile {
        max-width: 300px;
        max-height: 300px;
    }
}

.topdiv .profile {
    width: 100%;
    max-width: 300px;
    max-height: 300px;
    /* opacity: 1; */
    border-radius: 50%;
    border: 3px solid #fff;
    padding: 0;
    margin-top: 20px;
}