diff --git a/static/css/doc.css b/static/css/doc.css
index f15b5e4..c6bdcbf 100644
--- a/static/css/doc.css
+++ b/static/css/doc.css
@@ -87,6 +87,10 @@ main.doc {
             }
         }
 
+        & p:has(img.pic) {
+            text-align: center;
+        }
+
         & header {
             & h1 {
                 padding-bottom: 0.25lh;
diff --git a/static/css/main.css b/static/css/main.css
index 9064dff..a373272 100644
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -88,6 +88,22 @@ body {
     outline-offset: 0.2rem;
 }
 
+::selection {
+    background-color: color-mix(
+        in srgb,
+        var(--background-color),
+        var(--accent-pink) 75%
+    );
+    color: var(--text-color);
+}
+
+@media (prefers-color-scheme: dark) {
+    ::selection {
+        background-color: var(--accent-pink);
+        color: var(--background-color);
+    }
+}
+
 /* Set up typography */
 
 body,
@@ -260,7 +276,7 @@ th-literate-program {
     padding: 0.8rem 1.2rem;
     margin: 1.2rem 0;
     background-color: var(--shaded-background);
-    border-radius: 0.5em;
+    border-radius: 0.4em;
 
     transition: background-color var(--transition-duration);
 }
@@ -313,6 +329,10 @@ img {
         border-radius: 0;
     }
 
+    &[src*="+illust"] {
+        border-radius: 0;
+    }
+
     /* TODO: These could be autogenerated! */
 
     &[src*="+width72"] {
@@ -1100,7 +1120,7 @@ th-literate-program[data-mode="output"] {
 /* Syntax highlighting */
 
 :root {
-    --syntax-comment: #6c657b;
+    --syntax-comment: #78579f;
     --syntax-identifier: var(--text-color);
     --syntax-keyword1: #b03b0d;
     --syntax-keyword2: #02739d;
@@ -1127,7 +1147,7 @@ th-literate-program[data-mode="output"] {
 
 .th-syntax-highlighting span {
     &.comment {
-        --recursive-slnt: -16;
+        --recursive-slnt: -8;
         color: var(--syntax-comment);
     }