A text can be contained in different HTML tags like div, p or span. To put a text or a part of text in bold, you can just embed it in the b HTML tag. A contentPage_text can accommodate different predefined CSS classes to apply wanted style (see below).
TWIG component : Betclic/_content/_promotion/_twig/_components/_text.twig
CSS components : Betclic/_content/_promotion/_css/_components/_text.scss
Large text
Default text
Default highlighted text
Default bold text
Small text
Default lowlighted text
Small lowlighted text
Default text centered