💄 fixed styling for images

Signed-off-by: Sindre Kjelsrud <kjelsrudsindre@gmail.com>

src/pages/guestbook.astro

@@ -15,7 +15,7 @@ const visitors = guestbook["visitors"];
       {visitors.map((visitor) => (
         <div class="flex flex-col items-center">
           <figure class="relative">
-            <img src={visitor.image} class="rounded-s"/>
+            <img src={visitor.image} class="object-cover h-[300px] w-[300px] rounded-s"/>
             <figcaption class="absolute bottom-2 left-2 bg-black text-white px-4 py-2 rounded-xl text-xs">
               <div class="guestbook">
                 {visitor.name} ✿