I am using a template to build the website (https://github.com/learning-zone/website-templates/tree/master/victory-educational-institution-free-html5-bootstrap-template), the original The navigation bar looks like this:

Before shrinking: Navigation bar

After minification: Navigation bar

I changed the logo to my logo. Since my logo is smaller vertically, I changed the margins from 10px to 20px

.logo { width: 40%; margin: 20px 0px 20px 0; }

It looks centered: Navigation bar

But when I scroll down the page, the navigation bar shrinks and my logo doesn't stay vertically centered. It moves up. Navigation bar

I tried to fix the css, but it didn’t work

.logo { display: flex; justify-content: center; align-items: center; width: 40%; margin: 20px 0px 20px 0; }

This is the html code of the logo

The code in the css controls the position when zoomed out, but even if I add .logo or #logo, it doesn't help.

@media (min-width:768px) { .fixed-header-on .navbar-default .navbar-nav > li > a { padding-top: 20px; padding-bottom: 20px; } }

Thanks in advance for your help!