diff --git a/index.html b/index.html
index e38574a..77c6f46 100644
--- a/index.html
+++ b/index.html
@@ -8,9 +8,9 @@
     <link href="https://fonts.bunny.net/css?family=inter:400,700,900" rel="stylesheet" />
     <style>
         :root {
-            --pad: 16px;
             --content-max: 760px;
             --grid-max: 340px;
+            --pad-x: 16px;
         }
 
         * {
@@ -30,58 +30,54 @@
         }
 
         body {
+            min-height: 100vh;
+            min-height: 100dvh;
             -webkit-text-size-adjust: 100%;
         }
 
         .page {
-            min-height: 100vh;
-            min-height: 100svh;
-            min-height: 100dvh;
-            overflow-y: auto;
-            padding-top: max(48px, env(safe-area-inset-top));
-            padding-right: max(var(--pad), env(safe-area-inset-right));
-            padding-bottom: max(24px, env(safe-area-inset-bottom));
-            padding-left: max(var(--pad), env(safe-area-inset-left));
-        }
-
-        .content {
             width: min(100%, var(--content-max));
-            margin-inline: auto;   /* hard centering */
+            margin-inline: auto; /* TRUE horizontal centering */
             text-align: center;
+            padding:
+                max(48px, env(safe-area-inset-top))
+                var(--pad-x)
+                max(24px, env(safe-area-inset-bottom));
         }
 
         h1 {
+            margin: 0 0 2.2rem;
+            padding: 0 1rem;
             font-size: clamp(2rem, 8vw, 2.6rem);
             font-weight: 900;
             line-height: 1.1;
-            margin: 0 0 2.2rem;
-            padding: 0 1rem;
         }
 
         .grid {
             display: grid;
-            grid-template-columns: 1fr 1fr;
+            grid-template-columns: repeat(2, minmax(0, 1fr));
             gap: 0.75rem;
             width: min(100%, var(--grid-max));
-            margin: 0 auto 2.2rem; /* hard centering */
+            margin: 0 auto 2.2rem; /* centered */
         }
 
         .grid a {
+            width: 100%;
             display: inline-flex;
             align-items: center;
             justify-content: center;
             gap: 0.5rem;
             text-decoration: none;
+            white-space: nowrap;
             font-weight: 700;
             font-size: 0.95rem;
             padding: 0.85rem 1rem;
             border-radius: 9999px;
-            transition: transform .1s ease, opacity .15s ease, background-color .15s ease, color .15s ease;
-            white-space: nowrap;
+            transition: transform 0.1s ease, opacity 0.15s ease, background-color 0.15s ease, color 0.15s ease;
         }
 
         .grid a:active {
-            transform: scale(0.95);
+            transform: scale(0.97);
         }
 
         .grid a img {
@@ -89,6 +85,7 @@
             height: 20px;
             object-fit: contain;
             flex: 0 0 20px;
+            display: block;
         }
 
         .filled {
@@ -123,13 +120,13 @@
         }
 
         .playground {
+            width: min(100%, var(--grid-max));
+            margin: 0 auto; /* centered */
             display: flex;
             flex-direction: column;
             align-items: center;
-            font-size: 0.95rem;
             color: #666;
-            width: min(100%, var(--grid-max));
-            margin: 0 auto; /* hard centering */
+            font-size: 0.95rem;
         }
 
         .playground img {
@@ -154,38 +151,36 @@
         @media (max-width: 380px) {
             :root { --grid-max: 290px; }
             h1 { font-size: 2rem; }
-            .grid a { font-size: .8rem; padding: .7rem .6rem; }
+            .grid a { font-size: 0.8rem; padding: 0.7rem 0.6rem; }
         }
     </style>
 </head>
 <body>
     <main class="page">
-        <section class="content">
-            <h1>Zero Width Unicode Standard</h1>
+        <h1>Zero Width Unicode Standard</h1>
 
-            <div class="grid">
-                <a href="https://www.npmjs.com/package/zwus" target="_blank" rel="noopener noreferrer" class="filled">
-                    <img src="assets/npm-logo-black.svg" alt="npm" class="logo-invert"> npm
-                </a>
-                <a href="https://crates.io/crates/zwus" target="_blank" rel="noopener noreferrer" class="filled rust">
-                    <img src="assets/Cargo-Logo-Small.png" alt="Cargo"> crates.io
-                </a>
+        <div class="grid">
+            <a href="https://www.npmjs.com/package/zwus" target="_blank" rel="noopener noreferrer" class="filled">
+                <img src="assets/npm-logo-black.svg" alt="npm" class="logo-invert"> npm
+            </a>
+            <a href="https://crates.io/crates/zwus" target="_blank" rel="noopener noreferrer" class="filled rust">
+                <img src="assets/Cargo-Logo-Small.png" alt="Cargo"> crates.io
+            </a>
 
-                <div class="divider"></div>
+            <div class="divider"></div>
 
-                <a href="https://addons.mozilla.org/en-US/firefox/addon/in0sight/" target="_blank" rel="noopener noreferrer" class="outlined">
-                    <img src="assets/Firefox_logo,_2019.svg" alt="Firefox"> Firefox Add-on
-                </a>
-                <a href="https://chromewebstore.google.com/detail/acnmohbphjmnbaboacmecidopeplkhog" target="_blank" rel="noopener noreferrer" class="outlined">
-                    <img src="assets/Google_Chrome_icon_(February_2022).svg.png" alt="Chrome"> Chrome Extension
-                </a>
-            </div>
+            <a href="https://addons.mozilla.org/en-US/firefox/addon/in0sight/" target="_blank" rel="noopener noreferrer" class="outlined">
+                <img src="assets/Firefox_logo,_2019.svg" alt="Firefox"> Firefox Add-on
+            </a>
+            <a href="https://chromewebstore.google.com/detail/acnmohbphjmnbaboacmecidopeplkhog" target="_blank" rel="noopener noreferrer" class="outlined">
+                <img src="assets/Google_Chrome_icon_(February_2022).svg.png" alt="Chrome"> Chrome Extension
+            </a>
+        </div>
 
-            <div class="playground">
-                <img src="https://raw.githubusercontent.com/planetrenox/inzerosight/main/icon_128.png" alt="inØsight logo">
-                <p>playground: <a href="https://inzerosight.pages.dev" target="_blank" rel="noopener noreferrer">inzerosight.pages.dev</a></p>
-            </div>
-        </section>
+        <div class="playground">
+            <img src="https://raw.githubusercontent.com/planetrenox/inzerosight/main/icon_128.png" alt="inØsight logo">
+            <p>playground: <a href="https://inzerosight.pages.dev" target="_blank" rel="noopener noreferrer">inzerosight.pages.dev</a></p>
+        </div>
     </main>
 </body>
 </html>
