Update font size of landing page on mobile

docs/src/pages/index.tsx

@@ -6,25 +6,25 @@ function HomepageHeader() {
   return (
     <header>
       <section className="text-center m-6 p-12 border border-red-400 rounded-[50px] bg-gray-100 dark:bg-immich-dark-gray">
-        <h1 className="text-6xl font-bold mb-10 font-immich-title text-immich-primary dark:text-immich-dark-primary">
+        <h1 className="md:text-6xl font-bold mb-10 font-immich-title text-immich-primary dark:text-immich-dark-primary">
           IMMICH
         </h1>
-        <div className="font-thin text-2xl my-12 leading-4">
+        <div className="font-thin sm:text-base md:text-2xl my-12 sm:leading-tight">
           <p>SELF-HOSTED BACKUP SOLUTION </p>
           <p>FOR PHOTOS AND VIDEOS</p>
           <p>ON MOBILE DEVICE</p>
         </div>
 
-        <div className="flex place-items-center place-content-center mt-9 mb-16 gap-4">
+        <div className="flex place-items-center place-content-center mt-9 mb-16 gap-4 ">
           <Link
-            className="flex place-items-center place-content-center py-3 px-8 text-lg border bg-immich-primary dark:bg-immich-dark-primary rounded-full no-underline hover:no-underline text-white hover:text-gray-50 dark:text-immich-dark-bg  font-bold"
+            className="flex place-items-center place-content-center py-3 px-8 border bg-immich-primary dark:bg-immich-dark-primary rounded-full no-underline hover:no-underline text-white hover:text-gray-50 dark:text-immich-dark-bg font-bold"
             to="docs/overview/introduction"
           >
             GET STARTED
           </Link>
 
           <Link
-            className="flex place-items-center place-content-center py-3 px-8 text-lg border bg-immich-primary/10 dark:bg-gray-300  rounded-full hover:no-underline text-immich-primary dark:text-immich-dark-bg font-bold"
+            className="flex place-items-center place-content-center py-3 px-8 border bg-immich-primary/10 dark:bg-gray-300  rounded-full hover:no-underline text-immich-primary dark:text-immich-dark-bg font-bold"
             to="https://demo.immich.app/"
           >
             DEMO PORTAL