how do i enter a title for the tab??

I have several issues with the eyesite theme and was wondering if these mods can be done.
#1 The site looks different on different resolutions. Some lower resolutions show the left side column under the center column.
#2 I would like the two columns to be the same height on all pages, regardless of how much content is actually displayed.
#3 I would like to eliminate the space between the two columns.

The site in questions is here
https://www.alanmweber.com

Any help would be greatly appreciated.
Gary H.

I added an image to the header of a site that I am building, using the Eyesite theme. I’m having a lot of trouble getting the CSS just how I want it, though.

I’ve set up a child theme and that all works fine, customizing my own style.css. I just need some help with the CSS itself.

Specifically, I can’t remove a small space below the image, which is allowing the blue background of the header to show. I’ve set the <a> and <img> tags and the containing div.site-logo all to height: 100%, thinking that would set it to the full height of the header, but it’s not.

Also, I can’t get the nav menu (header nav#site-navigation) to be at the bottom of the header area. I tried vertical-align: bottom, but that didn’t work and I’m not sure what else to try for that.

The site is here.