Need to change size of logo on login screen

I have gone through a number of tutorials on swapping out the Wordpress logo on the wp-login.php page (this being the most recent -

I'm using two themes on my site - Kleo for the web, Appresser (Child) for a mobile app. I cannot for anything get this style to apply to the mobile login page.

Here is the mobile login:

Here is the CORRECT style (I believe) to increase the size of the logo:

body.login div#login h1 a
padding-bottom: 0px;
width:100%; !important;

When I put it in the CSS in my login/login_styles.css and even the child CSS - nothing.

Any ideas?