.wppb-form-field.wppb-mailpoet-subscribe input,
.wppb-form-field.wppb-mailpoet-subscribe label {
    width: auto;
    float: none;
}

.wppb-user-forms .wppb-form-field.wppb-mailpoet-subscribe label input[type="checkbox"] {
    margin-right: 10px !important;
}