nav.principal {
    width: 100%;
    display: flex;
    color: snow;
    align-items: center;
    justify-content: space-around;
    border-top: 2px solid snow;
    border-bottom: 2px solid snow;
    flex-direction: column;
    gap: 10px;
}

nav.principal a.principal__item {
    color: snow;
    text-decoration: none;
    padding: 20px 10px;
    box-sizing: border-box;
    font-size: 2rem;
}