For future reference, the height of the banner can be controlled by one css variable in 4.5, so you don't need media queries or multiple css selectors.
For example, this will increase the header height to 300px:
:root{
--header--height: 300px;
}
Or if you only want to edit the height of the mobile header, simply use:
:root{
--responsive-header--height: 100px;
}
From there, you'd then use the "Logo height" setting to control the height of the logo. So if you've set your header to 300px and want your logo to be 150px in height, you'd change the setting to 50%
The old user links were positioned using absolute positioning. If you want to replicate this in 4.5, add this to custom.css
#elUserNav{ position: absolute; }
[dir='ltr'] #elUserNav{ right: 0; }
[dir='rtl'] #elUserNav{ left: 0; }
That should work, but let me know if it doesn't 🙂