Margin -1 в самой теме

Здравствуйте
В мобильной версии страница имеет белую полосу справа. Стала смотреть код — вижу в одном месте margin -1
Хочу убрать но в код темы боюсь лезть, как найти этот элемент в визуальном редакторе?

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</style>

Страница, с которой нужна помощь: [войдите, чтобы увидеть ссылку]