In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on General Section.
Now In Click Breadcrumb Here you can Manage Image & Image Position of Breadcrumb
Go to Customize -> General Section->Breadcrumb
You have to use Breadcrumb Image Size 1920Px X 300Px
In WordPress Dashboard go to the Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on the General Section.
Now In Click Breadcrumb Here you can Manage Min Height, Alignment & Opacity of Breadcrumb
Go to Customize -> General Section->Breadcrumb