improve testimonial cards, fix some minor issues

src/layouts/partials/Header.astro

@@ -128,7 +128,7 @@ const { pathname } = Astro.url;
         settings.search && (
           <a
             class="mr-5 inline-block border-r border-border pr-5 text-xl text-dark hover:text-primary dark:border-darkmode-border dark:text-white"
-            href="search"
+            href="/search"
             aria-label="search"
           >
             <IoSearch />

src/layouts/partials/Testimonial.astro

@@ -47,7 +47,7 @@ const { testimonial } = Astro.props;
                             <Image
                               height={50}
                               width={50}
-                              class="rounded-full border border-primary dark:border-darkmode-primary"
+                              class="rounded-full"
                               src={item.avatar}
                               alt={item.name}
                             />