Any ideas how to allow CSS input to perfectly work in the text area with wp_kses?

The > entity is probably being filtered by “esc_textarea”. You can read more about “esc_” below:

http://codex.wordpress.org/Data_Validation

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