.woocommerce-MyAccount-navigation, nav.woocommerce-MyAccount-navigation {
    display: none !important;
    width: 0 !important;
    max-width: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
}

.woocommerce-MyAccount-content {
    width: 100% !important;
    max-width: 100% !important;
    float: none !important;
    margin: 0 !important;
    padding: 0 !important;
}