diff --git a/PyPost.py b/PyPost.py
index 882b5bf..899b895 100644
--- a/PyPost.py
+++ b/PyPost.py
@@ -123,6 +123,19 @@ def render_markdown(md_path: Path):
     <link rel="stylesheet" href="../css/main.css">
     <link rel="icon" type="image/x-icon" href="../css/favicon/favicon.ico">
     <script src="../js/post/download.js" defer></script>
+
+    <!-- Prism.js CSS theme -->
+    <link href="https://cdn.jsdelivr.net/npm/prismjs/themes/prism.min.css" rel="stylesheet" />
+
+    <!-- Optional: different theme (e.g. dark) -->
+    <!-- <link href="https://cdn.jsdelivr.net/npm/prismjs/themes/prism-okaidia.min.css" rel="stylesheet" /> -->
+
+    <!-- Prism.js core + languages -->
+    <script src="https://cdn.jsdelivr.net/npm/prismjs/prism.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/prismjs/components/prism-python.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/prismjs/components/prism-javascript.min.js"></script>
+    <!-- remove if causing issues -->
+    <script src="../js/post/lazyimg.js"></script>
     <style>
         a {{ text-decoration: none; color: #0066cc; }}
     </style>
@@ -136,7 +149,10 @@ def render_markdown(md_path: Path):
         <img src="../css/icons/written.webp" width="32" height="32" alt="write_img" loading="lazy" style="vertical-align: middle;padding-left:12px; padding-left:40px;" />
         <div class="meta" style="display: inline;">Written @{time.asctime(time.localtime())}</div>
         <hr style="margin:10px 0;" />
-        {html_body}
+        <div class="html-content">
+            <!-- Injected by Marko or fastmd -->
+            {html_body}
+        </div>
     </main>
 
     <footer style="margin-top:auto; width:100%;">
diff --git a/css/main.css b/css/main.css
index 4a72360..75b6bcb 100644
--- a/css/main.css
+++ b/css/main.css
@@ -1,87 +1,209 @@
-/* Reset & basic styles */
-body {
-  font-family: Arial, sans-serif;
-  font-size: 16px;
-  line-height: 1.5;
-  margin: 1em;
-  color: #000;
-  background: #fff;
+/* basic rules for fallback */body { font-family: Arial, sans-serif; font-size: 16px; line-height: 1.5; margin: 1em; color: #000; background: #fff; } h1, h2, h3, h4, h5, h6 { font-weight: bold; margin: 1em 0 0.5em; } p, ul, ol, blockquote, pre, table { margin: 0.5em 0; } /* Lists */ ul, ol { padding-left: 2em; } li { margin: 0.25em 0; } /* Links */ a { color: blue; text-decoration: underline; } a:hover { color: darkblue; } /* Tables */ table { border-collapse: collapse; width: 100%; margin: 1em 0; } th, td { border: 1px solid #000; padding: 0.5em; text-align: left; } th { background: #eee; } /* Code blocks */ code, pre { font-family: Consolas, monospace; background: #f5f5f5; padding: 2px 4px; border-radius: 3px; } pre { overflow: auto; padding: 0.5em; } /* Blockquote */ blockquote { border-left: 4px solid #ccc; padding-left: 1em; color: #555; margin: 1em 0; } /* Forms */ input, select, textarea, button { font: inherit; padding: 0.4em; margin: 0.25em 0; border: 1px solid #999; border-radius: 3px; } button { background: #eee; cursor: pointer; } button:hover { background: #ddd; } .html-content { margin-left: 1em; } .html-content hr { border: none; height: 1px; background: linear-gradient(to right, transparent, #bbb, transparent); margin: 2em auto; width: 80%; }
+
+/* Content container */
+.html-content {
+  margin: 0 auto;
+  padding: 0 1em;
+  max-width: 800px; /* keeps text readable */
+  line-height: 1.6;
 }
 
-h1, h2, h3, h4, h5, h6 {
-  font-weight: bold;
-  margin: 1em 0 0.5em;
+/* Headings inside content */
+.html-content h1, 
+.html-content h2, 
+.html-content h3, 
+.html-content h4, 
+.html-content h5, 
+.html-content h6 {
+  margin-top: 1em;
+  margin-bottom: 0.75em;
+  line-height: 1.3;
 }
 
-p, ul, ol, blockquote, pre, table {
-  margin: 0.5em 0;
+/* Paragraphs & lists */
+.html-content p,
+.html-content ul,
+.html-content ol,
+.html-content blockquote,
+.html-content pre,
+.html-content table {
+  margin: 1em 0;
 }
 
-/* Lists */
-ul, ol {
-  padding-left: 2em;
-}
-
-li {
-  margin: 0.25em 0;
-}
-
-/* Links */
-a {
+/* Links inside content */
+.html-content a {
   color: blue;
   text-decoration: underline;
 }
-a:hover {
+.html-content a:hover {
   color: darkblue;
 }
 
 /* Tables */
-table {
+.html-content table {
   border-collapse: collapse;
-  width: 100%;
-  margin: 1em 0;
+  margin: 1.5em auto;
+  max-width: 100%;
+  width: auto;              /* shrink to fit content */
+  min-width: 60%;           /* don’t collapse too much */
 }
-th, td {
+.html-content th,
+.html-content td {
   border: 1px solid #000;
-  padding: 0.5em;
-  text-align: left;
+  padding: 0.5em 0.75em;
 }
-th {
+.html-content th {
   background: #eee;
 }
 
-/* Code blocks */
-code, pre {
-  font-family: Consolas, monospace;
-  background: #f5f5f5;
-  padding: 2px 4px;
-  border-radius: 3px;
-}
-pre {
-  overflow: auto;
-  padding: 0.5em;
+/* Prevent wide tables/code/images from breaking layout */
+.html-content pre,
+.html-content table,
+.html-content img {
+  max-width: 100%;
+  overflow-x: auto;
 }
 
-/* Blockquote */
-blockquote {
-  border-left: 4px solid #ccc;
-  padding-left: 1em;
-  color: #555;
+/* Code blocks */
+.html-content code,
+.html-content pre {
+  font-family: Consolas, monospace;
+  background: #f5f5f5;
+  border-radius: 3px;
+}
+.html-content pre {
+  padding: 0.75em;
   margin: 1em 0;
 }
 
+/* Blockquotes */
+.html-content blockquote {
+  border-left: 4px solid #ccc;
+  padding-left: 1em;
+  color: #555;
+  margin: 1.5em 0;
+  font-style: italic;
+}
+
 /* Forms */
-input, select, textarea, button {
+.html-content input,
+.html-content select,
+.html-content textarea,
+.html-content button {
   font: inherit;
   padding: 0.4em;
   margin: 0.25em 0;
   border: 1px solid #999;
   border-radius: 3px;
 }
-button {
+.html-content button {
   background: #eee;
   cursor: pointer;
 }
-button:hover {
+.html-content button:hover {
   background: #ddd;
 }
+
+/* HR (as defined earlier) */
+.html-content hr {
+  border: none;
+  height: 1px;
+  background: linear-gradient(to right, transparent, #bbb, transparent);
+  /*margin: 2em auto;*/
+  width: 80%;
+}
+
+
+/* GFM CSS */
+  .html-content blockquote.alert {
+    border-left: 4px solid;
+    padding: 0.75em 1em;
+    margin: 1.5em 0;
+    border-radius: 4px;
+    background: #f9f9f9;
+    font-size: 0.95em;
+  }
+
+  .html-content blockquote.alert p:first-child {
+    font-weight: bold;
+    margin-top: 0;
+  }
+
+  /* Variants */
+  .html-content .alert-note {
+    border-color: #0366d6;
+    background: #f0f7ff;
+    color: #0366d6;
+  }
+  .html-content .alert-tip {
+    border-color: #28a745;
+    background: #f0fff4;
+    color: #28a745;
+  }
+  .html-content .alert-important {
+    border-color: #6f42c1;
+    background: #f9f5ff;
+    color: #6f42c1;
+  }
+  .html-content .alert-warning {
+    border-color: #d97706;
+    background: #fffaf0;
+    color: #d97706;
+  }
+  .html-content .alert-caution {
+    border-color: #d73a49;
+    background: #fff5f5;
+    color: #d73a49;
+  }
+
+  .html-content blockquote.alert p:first-child::before {
+    content: "";
+    display: inline-block;
+    width: 1em;
+    height: 1em;
+    margin-right: 0.5em;
+    vertical-align: -0.125em;
+    background-size: contain;
+    background-repeat: no-repeat;
+    background-position: center;
+  }
+
+  /* INFO */
+  .html-content .alert-note p:first-child::before {
+    background-image: url("data:image/svg+xml;utf8,\
+    <svg xmlns='http://www.w3.org/2000/svg' fill='%230366d6' viewBox='0 0 16 16'>\
+      <path d='M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8Zm8-6.5a6.5 6.5 0 1 0 0 13 6.5 6.5 0 0 0 0-13ZM6.5 7.75A.75.75 0 0 1 7.25 7h1a.75.75 0 0 1 .75.75v2.75h.25a.75.75 0 0 1 0 1.5h-2a.75.75 0 0 1 0-1.5h.25v-2h-.25a.75.75 0 0 1-.75-.75ZM8 6a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z'/>\
+    </svg>");
+  }
+
+  /* TIP */
+  .html-content .alert-tip p:first-child::before {
+    background-image: url("data:image/svg+xml;utf8,\
+    <svg xmlns='http://www.w3.org/2000/svg' fill='%2328a745' viewBox='0 0 16 16'>\
+      <path d='M8 1.5c-2.363 0-4 1.69-4 3.75 0 .984.424 1.625.984 2.304l.214.253c.223.264.47.556.673.848.284.411.537.896.621 1.49a.75.75 0 0 1-1.484.211c-.04-.282-.163-.547-.37-.847a8.456 8.456 0 0 0-.542-.68c-.084-.1-.173-.205-.268-.32C3.201 7.75 2.5 6.766 2.5 5.25 2.5 2.31 4.863 0 8 0s5.5 2.31 5.5 5.25c0 1.516-.701 2.5-1.328 3.259-.095.115-.184.22-.268.319-.207.245-.383.453-.541.681-.208.3-.33.565-.37.847a.751.751 0 0 1-1.485-.212c.084-.593.337-1.078.621-1.489.203-.292.45-.584.673-.848.075-.088.147-.173.213-.253.561-.679.985-1.32.985-2.304 0-2.06-1.637-3.75-4-3.75ZM5.75 12h4.5a.75.75 0 0 1 0 1.5h-4.5a.75.75 0 0 1 0-1.5ZM6 15.25a.75.75 0 0 1 .75-.75h2.5a.75.75 0 0 1 0 1.5h-2.5a.75.75 0 0 1-.75-.75Z'/>\
+    </svg>");
+  }
+
+  /* IMPORTANT */
+  .html-content .alert-important p:first-child::before {
+    background-image: url("data:image/svg+xml;utf8,\
+    <svg xmlns='http://www.w3.org/2000/svg' fill='%236f42c1' viewBox='0 0 16 16'>\
+      <path d='M0 1.75C0 .784.784 0 1.75 0h12.5C15.216 0 16 .784 16 1.75v9.5A1.75 1.75 0 0 1 14.25 13H8.06l-2.573 2.573A1.458 1.458 0 0 1 3 14.543V13H1.75A1.75 1.75 0 0 1 0 11.25Zm1.75-.25a.25.25 0 0 0-.25.25v9.5c0 .138.112.25.25.25h2a.75.75 0 0 1 .75.75v2.19l2.72-2.72a.749.749 0 0 1 .53-.22h6.5a.25.25 0 0 0 .25-.25v-9.5a.25.25 0 0 0-.25-.25Zm7 2.25v2.5a.75.75 0 0 1-1.5 0v-2.5a.75.75 0 0 1 1.5 0ZM9 9a1 1 0 1 1-2 0 1 1 0 0 1 2 0Z'/>\
+    </svg>");
+  }
+
+  /* WARNING */
+  .html-content .alert-warning p:first-child::before {
+    background-image: url("data:image/svg+xml;utf8,\
+    <svg xmlns='http://www.w3.org/2000/svg' fill='%23d97706' viewBox='0 0 16 16'>\
+      <path d='M6.457 1.047c.659-1.234 2.427-1.234 3.086 0l6.082 11.378A1.75 1.75 0 0 1 14.082 15H1.918a1.75 1.75 0 0 1-1.543-2.575Zm1.763.707a.25.25 0 0 0-.44 0L1.698 13.132a.25.25 0 0 0 .22.368h12.164a.25.25 0 0 0 .22-.368Zm.53 3.996v2.5a.75.75 0 0 1-1.5 0v-2.5a.75.75 0 0 1 1.5 0ZM9 11a1 1 0 1 1-2 0 1 1 0 0 1 2 0Z'/>\
+    </svg>");
+  }
+
+  /* CAUTION */
+  .html-content .alert-caution p:first-child::before {
+    background-image: url("data:image/svg+xml;utf8,\
+    <svg xmlns='http://www.w3.org/2000/svg' fill='%23d73a49' viewBox='0 0 16 16'>\
+      <path d='M4.47.22A.749.749 0 0 1 5 0h6c.199 0 .389.079.53.22l4.25 4.25c.141.14.22.331.22.53v6a.749.749 0 0 1-.22.53l-4.25 4.25A.749.749 0 0 1 11 16H5a.749.749 0 0 1-.53-.22L.22 11.53A.749.749 0 0 1 0 11V5c0-.199.079-.389.22-.53Zm.84 1.28L1.5 5.31v5.38l3.81 3.81h5.38l3.81-3.81V5.31L10.69 1.5ZM8 4a.75.75 0 0 1 .75.75v3.5a.75.75 0 0 1-1.5 0v-3.5A.75.75 0 0 1 8 4Zm0 8a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z'/>\
+    </svg>");
+  }
diff --git a/js/post/lazyimg.js b/js/post/lazyimg.js
new file mode 100644
index 0000000..551f8b9
--- /dev/null
+++ b/js/post/lazyimg.js
@@ -0,0 +1,54 @@
+/**
+ * Still very experimental, does not yet work as intended.
+ * Will keep updating this.
+ */
+document.addEventListener("DOMContentLoaded", () => {
+  const images = document.querySelectorAll("img");
+  images.forEach(img => {
+    if (!img.dataset.src) {
+      img.dataset.src = img.src;
+      img.src = ""; // prevent immediate loading
+    }
+  });
+
+  const svgs = document.querySelectorAll("svg");
+  svgs.forEach(svg => {
+    if (!svg.dataset.svg) {
+      svg.dataset.svg = svg.innerHTML;
+      svg.innerHTML = ""; // clear for lazy-loading
+    }
+  });
+
+  const lazyElements = document.querySelectorAll("img[data-src], svg[data-svg]");
+
+  if ("IntersectionObserver" in window) {
+    const observer = new IntersectionObserver((entries, obs) => {
+      entries.forEach(entry => {
+        if (entry.isIntersecting) {
+          const el = entry.target;
+
+          if (el.tagName === "IMG" && el.dataset.src) {
+            el.src = el.dataset.src;
+            el.removeAttribute("data-src");
+          }
+
+          if (el.tagName === "SVG" && el.dataset.svg) {
+            el.innerHTML = el.dataset.svg;
+            el.removeAttribute("data-svg");
+          }
+
+          obs.unobserve(el);
+        }
+      });
+    }, { rootMargin: "100px" });
+
+    lazyElements.forEach(el => observer.observe(el));
+  } else {
+    // Fallback: load all immediately
+    lazyElements.forEach(el => {
+      if (el.tagName === "IMG" && el.dataset.src) el.src = el.dataset.src;
+      if (el.tagName === "SVG" && el.dataset.svg) el.innerHTML = el.dataset.svg;
+    });
+  }
+});
+