Hummingbird Performance Report

Hi,

I received the following recommendations after running the Performance test:

Remove render-blocking JavaScript:

https://cdn.phen375online.com/wp-content/uploads/wp-hummingbird-cache/dbacb0b20efacd517ab914406bbaf7b7.js

Optimize CSS Delivery of the following:

https://cdn.phen375online.com/wp-content/themes/focusblog/style.css?ver=4.4.2

https://cdn.phen375online.com/wp-content/uploads/wp-hummingbird-cache/cae16fae6d36f2370d061d63a893d202.css

https://cdn.phen375online.com/wp-content/uploads/wp-hummingbird-cache/c48b660f52a80ed09f64f8bf6ca02e63.css

https://cdn.phen375online.com/wp-content/uploads/wp-hummingbird-cache/1be64dcb102786729b53dbf27dfc599a.css

How do you solve the above?

Thanks.
Ethan