Fix vertical autoscroll

Author: FliegendeWurst

src/themes/style.css

@@ -13,6 +13,7 @@
 
   header {
     border-bottom: 1px solid #163855;
+    border-right: 1px solid #163855;
   }
 }
 
@@ -27,6 +28,7 @@
 
   header {
     border-bottom: 1px solid #d9d7d7;
+    border-right: 1px solid #d9d7d7;
   }
 }
 
@@ -51,6 +53,7 @@ body {
   display: flex;
   flex-direction: column;
   height: 100%;
+  overflow: auto;
 }
 
 header {
@@ -65,6 +68,9 @@ main {
   flex-grow: 1;
   padding: 1em 2em 1em 2em;
   user-select: none;
+
+  overflow: visible;
+  min-height: 0;
 }
 
 #nav-title {
@@ -222,7 +228,8 @@ a, a:visited, a:hover {
 }
 
 #code {
-  overflow-x: auto;
+  overflow: visible;
+  min-width: fit-content;
 }
 
 td.line-number {