Trying to fix the problem.

_sass/main.scss

@@ -46,7 +46,7 @@ body {
     text-align: left;
     text-rendering: optimizeLegibility;
     background-color: #dadada;
-    line-height: 1.625em; /* 16×1.625=26pt */
+    line-height: 1.625em;
     font-family: "Arial Black", Gadget, sans-serif;
     font-size: 1.080625em;
     word-spacing: 0em;
@@ -58,7 +58,7 @@ a:hover {
 
 /* Use for abbreviations only. */
 abbr {
-  letter-spacing: 0.1em;
+    letter-spacing: 0.1em;
 }
 
 blockquote {