Bold Texts from Posts do not show up bold on website

I am having a problem with my site, whereas if I use bold and italics in my post editor, when I publish my post, there is no bold or italics text. My source text shows the <-strong-> tag, however, it does not show up bold. I have also tried the <b> tag as well. Any thoughts? Thanks.

my website is https://www.the-hobbitmovie.com