Only need Retina 2x Logo

Now I have fixed the custom height as “45px”, of header in Admin panel for logo/header.

my logo size is 457px x 45px
I now have another picky issue, my client is saying that they are seeing blurry logo image.

I want to fix the height at 45px, but some how my logo is wide. and its blurred

https://kriesi.at/support/topic/mobile-logo-blurry-gets-techy-and-complicated/

I have read your post and WP-Retina 2x does not help, since i am not concerned about post images
i am only talking about Logo..

Please check this link on your TAB.
and on the desktop

On desktop Its nice and sharp, but on tab potrait and landscape both the logo is blurred.

please help thanks a lot
>>
If i go with manual solution ,… editing header.php

i wont be able to update your theme…

i am using child theme.. but only using custom css
and functions…

is there a way to use header.php empty and then put my code.. on child theme …
i dont think so … ! u need to use the real header.. and put your code..
then update and redo this step correct ?

anyways.. please provide solution for blurred logo