Migrate to snowfall lib

modules/home/wayland/apps/eww/css/_calendar.scss

@@ -0,0 +1,31 @@
+.calendar-win {
+  @include window;
+  background-color: $bg;
+  color: $fg;
+  padding: .2em;
+}
+
+calendar {
+  padding: 5px;
+
+  :selected {
+    color: $base0C;
+  }
+
+  .header {
+    color: $base05;
+  }
+
+  .highlight {
+    color: $base0C;
+    font-weight: bold;
+  }
+
+  .button {
+    color: $base0C;
+  }
+
+  :indeterminate {
+    color: $base03;
+  }
+}