Using inspect element can help. Or even looking at this component’s CSS source or the Air Theme as the first part of the CSS under common first few lines target the search banner with mods targetting it.
Untested as an not XP the issue you mention.
.display-search-banner {
#main-outlet {
padding-top: 2em;
align: center !important;
}
Put this code in a custom theme-component CSS common.
I can appreciate the desire for ppl to provide how to code. As I am still learning myself. However we need to also work on educating ourselves with the basics.
You can possibly test the “align: center !important;” using your browser’s inspect element.