I'm completely new to CMSMS...and have a question, which is maybe stupid

Moreover, I'm french, so my english is quite poor : please, forgive me for all my mistakes

I have to build a website for my parent's association. This association is devoted to family who have lost a child. It is affiliated to the UK (and US) association Compassionate Friends.
For now on, we have only a hand-made website (html +php + css by hand). However, my goal is to create a website that my parents can manage by themself : writing news, writing articles, etc.
(for now on : they send me the text and I put it in the .php files by hand ...). So CMSMS seems to be a very nice compromise.
This website will contain a section containing some texts, poems, etc.
I would like to create an authomatic "style-maker". Let me explain it

Each text/poem will have a few parameters, like :
- a title
- author of the text
- an image
- the body of the text
I would like CMSMS to put the title in the right place (with the "<h3>.. </h3>"), the text, the image and the author in the place and with the style, indicated in the template/CSS file.
My question is the following. Is it possible to create a page, as the page "create article", which will be adapted to this case.
To be more precise, is it possibile to create a page in the admin board which will ask the writter to fill :
Title :
Author of the text :
Image :
Body of the text :
Thus, my parents would just have to fill the blanks and the CSS template will place every thing in the right place with the right style.
(see
here for example
in french, but just to have an idea ...)
I don't ask you to do this "module", but "do you think it is possible ?"

(and "if yes, how hard is it ?")
If it's too hard, then I will find another solution, more "hand-made", that's not a big deal

Or maybe, you have an idea ?
Thank you very much in advance, and have a good night (or end of afternoon for the US members

Thosbk