Add damage management and DR for monsters also

styles/roll.less

@@ -241,6 +241,11 @@
       background-color: rgba(0, 0, 0, 0.1);
       border-radius: 5px;
 
+      &.monster-damage {
+        grid-template-columns: 1fr;
+        justify-items: center;
+      }
+
       .damage-roll-btn {
         padding: 6px 10px;
         background: linear-gradient(to bottom, #8b4513 0%, #6b3410 100%);