Ваша проблема не в том, что вы предполагали.
Scrapy не волнует, какие стили CSS используются (если вы явно не используете их в селекторах), только о том, что присутствует в источнике страницы.
Источник вашей страницы содержит что-то вроде этого:
<th class="cote-simplegagnant cote-reference"></th>
Как видите, выбранные вами th
пусты, и позже они заполняются javascript.
При более внимательном рассмотрении источника вы можете найти тег script
, содержащий необходимую информацию:
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