unable to override style block within wp_head()

I simply added the below code right before the closing head tag. I am not sure if this is the best way to do it but it works.

<style>
html {
margin-top: 0 !important;
}
</style>

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