Show/Hide text after the first paragraph

Use both the_excerpt() and the_content(). Keep the_content() hidden, and after the_exceprt() add your Icon.
When someone clicks this Icon, toggle between the_excerpt() and the_content().

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)