#mapa {
    margin-bottom: 50px;
    margin-top: 50px;
    width: 100%;
}

#paises {
    display: flex;
    flex-direction: row;
    list-style-type: none;
    width: 100%;
}

#paises li {
    flex: auto;
    flex-basis: 20%;
}

#paises img {
    width: 100%;
}

@media screen and (max-width: 1023px) {

    #paises {
        flex-direction: column;
    }

}