Plainly, about the design
There is no bridal shower shelf on our template list. The dedicated designs we build properly today are wedding, birthday, baby shower and graduation. A bridal shower is usually built on the general event page, and hosts who want something softer in tone pick from the wedding designs and change the wording.
That is not a limitation in practice, because the sections a shower needs are the ones every page has: the invitation itself, the practical details, a place for the theme, the reply form, and the guestbook. A shower page tends to be short and get read to the end, which is more than most event sites manage.
Write it the way you would text it. Warm, specific, and clear about who is hosting, because the couple's friends are far more likely to reply promptly to a friend's name than to an announcement written in the third person.