style: adjust companies section margin and remove negative top positioning

src/components/Companies.tsx

@@ -40,7 +40,7 @@ const row2 = logos.slice(6);
 
 export function Companies() {
   return (
-    <div id="companies" className="relative bg-black flex flex-col items-center justify-center w-full overflow-hidden antialiased  py-4 -top-20">
+    <div id="companies" className="relative bg-black flex flex-col items-center justify-center w-full overflow-hidden antialiased  py-4 mb-12">
       <div className="relative z-10 mx-auto w-full max-w-6xl p-4">
 
         {/* Heading */}