Fix tab nav button disabled style

style/components/tabs.less

@@ -65,6 +65,12 @@
     background-color: transparent;
     position: absolute;
     text-align: center;
+    color: #999;
+    transition: color 0.3s ease;
+
+    &:hover {
+      color: #666;
+    }
 
     &-icon {
       position: relative;
@@ -87,9 +93,11 @@
   }
 
   &-tab-btn-disabled {
-    cursor: default;
-    color: #ccc;
-    pointer-events: none;
+    cursor: not-allowed;
+    &,
+    &:hover {
+      color: #ccc;
+    }
   }
 
   &-tab-next {