Content text cannot be defined in css

[studiobruinsma]

I have two styles for my text, one for the title, and one for the rest of the text.
But for some reason the css code doesn't work for the text thats in my content div.

like this:

<div id="content">
<div class="tekstblok1">
<!--<?php get_page_content(); ?>-->
<span class="plat">
<a href="http://www.catwalkpromotions.nl/">Catwalk Promotions</a>
<p>
Opdracht:<br>
E-mail uitnodiging voor<br>
Amsterdam Fashion Week
</span>
</div>
<div class="tekstblok2">
</div>
<div class="tekstblok3">
</div>
</div>

Above this content I have 3 blocks with a picture in it and a title.
And those titles are connected to the css style.

But everything in the content div doesnt connect to the css.

See the picture I have added with all the information