Hi Robert. Two things:
1. You can remove the @import line in your child theme style.css file. The theme recognizes the child theme and automatically loads both the default and child theme stylesheets.
2. The first comment in your child theme style.css file is missing the closing delimiter. Add that and it should work:
/* Tweak for logo in header <--- */ missing
.site-branding {
display: inline-block;
}
.site-logo {
float: left;
margin-right: 20px;
}
/* Theme Anpassung enden hier */