Fix column rotation. Closes #35.

Closes #35 (closed)

biscuit/apps/alsijil/static/css/alsijil/full_register.css

@@ -128,20 +128,14 @@ th.lessons-day-head {
   writing-mode: tb-rl;
 }
 
-tr.lesson-substituted {
-  background-color: #ffc107;
-}
-
-tr.lesson-cancelled {
-  background-color: #dc3545;
-}
-
 tr.lesson-cancelled td {
-  text-decoration: line-through:
+  text-decoration: line-through;
+  background-color: #dc3545;
 }
 
 tr.lesson-substituted td.lesson-subj {
   text-decoration: line-through;
+  background-color: #ffc107;
 }
 
 td.lesson-notes {