Slightly decrease font size of inline code

`line-height: 1.9824;` is the result of `calc(1em * 1.4 + 2 * 0.1em + 2 * 1px / 16px / 0.85 + 2 * 0.1em / 0.85)` (`1em * 1.4` equals the line height for code (= `1.4` times), plus `0.1em` vertical padding on top and bottom, plus `1px` border width on top and bottom (`1rem` equals `16px` and considering the smaller font size (= `0.85rem`)), plus `0.1em` vertical margin on top and bottom (also considering the smaller font size).

css/style.css

@@ -269,8 +269,8 @@ code {
     border-radius: 0.3em;
     background: #f5f5f5;
     font-family: 'Droid Sans Mono', 'Courier New', 'Courier', monospace;
-    font-size: 0.9rem;
-    line-height: 1.9778;
+    font-size: 0.85rem;
+    line-height: 1.9824;
 }
 
 pre {