Hi,
Which template you are using, please?
For our Helix Ultimate template there are logo height option that may help:
Template options>basic>logo height: https://prnt.sc/xP3v_XQZx42R
Or here is sample custom CSS for Helix Ultimate:
.logo-image {
margin: 20px 0;
}
Note: Path towards custom CSS(Joomla 4): System>Site Templates Styles> Click on your current default template name then choose Template Options. Then find custom CSS within the custom code.
https://prnt.sc/5mBuSRh907N3
https://prnt.sc/ooiq-lkMEXr_
https://prnt.sc/nunlX-f5AhK1
Best Regards