I just installed this Kalni Theme and im really happy with it allthough i hhave a big issue.
 
The header section is not displayed on inital opening of the website as shown in this image(https://imgur.com/W5btYqF)
The header section ONLY starts to show after i resize the window (https://imgur.com/zCPBqvq)
Where is this issue coming from and how do i fix it that the header gets properly loaded and displayed? Thank you