I'm having trouble italicizing words within my content, such as the title of my documentary. I assumed it is something I have to write into the theme, but I was unable to use:

#body {
 div { font-style: italic; } } 

to make any changes. I thought I could apply this theme to the certain words each time they came up in my content. I just copied this tag from another response, so I'm assuming that this is not correct.