fix(mobile): restrict maximum width

Signed-off-by: Sphericalkat <amolele@gmail.com>

frontend/show.html

@@ -17,7 +17,7 @@
 </head>
 
 <body class="flex flex-col h-full w-full items-center">
-    <article class="prose lg:prose-lg sm:prose-sm py-20">
+    <article class="prose lg:prose-lg sm:prose-sm py-20 px-8 md:px-0 max-w-sm sm:max-w-none">
         <h1 class="text-2xl">{{.Title}}</h1>
         <p class="pb-8"><a href="https://medium.com/u/{{.UserId}}">{{.Author}}</a> on {{.PublishDate}}</p>
         {{.Paragraphs}}