remove headerbar fixed height

Author: LinuxJava7

src/components/Navigation/Headerbar.astro

@@ -9,7 +9,6 @@ const { pageTitle } = Astro.props;
   #header-bar {
     display: flex;
     box-sizing: border-box;
-    height: 80px;
     padding: 1rem;
     position: sticky;
     top: 0;