Are you talking about the excerpts that are displaying? Try this in custom CSS:
.child-page .entry-content p {styles;}
how much from the page it displays?
By default, WordPress will automatically excerpt the first 55 words from each post. If you want to change that default, there are custom functions that will do that for you. You can find them by searching this forum or the WordPress forums.
If you want a custom excerpt for each post, you can add that excerpt to the "Custom Excerpt" part of your post editing pane. You may have to activate it via screen options.
Moved to Support. Please post in the correct section next time.